{"id":535664,"date":"2026-01-28T12:23:12","date_gmt":"2026-01-28T12:23:12","guid":{"rendered":"https:\/\/www.constructionnews.co.uk\/?p=535664"},"modified":"2026-01-28T12:23:12","modified_gmt":"2026-01-28T12:23:12","slug":"green-city-reusing-steel-to-build-a-new-block-in-london","status":"publish","type":"post","link":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/","title":{"rendered":"Green city: reusing steel to build a new block in London"},"content":{"rendered":"
\n

Project name:<\/strong> 2 Aldermanbury Square
\nClient:<\/strong> Great Portland Estates
\nMain contractor:<\/strong> Bovis
\nContract type:<\/strong> JCT 2016 Design and Build (amended)
\nTotal project value:<\/strong> \u00a3200m
\nDelivery architect:<\/strong> Allies and Morrison
\nStructural engineer:<\/strong> Arup
\nDemolition and enabling works:<\/strong> Keltbray
\nSteel frame:<\/strong> William Hare
\nMEP design:<\/strong> Sweco
\nTower cranes:<\/strong> Wolffkran
\nStart on site date:<\/strong> April 2024
\nCompletion date:<\/strong> February 2026<\/p>\n<\/div>\n

The City of London has long been the centre of the nation\u2019s commerce. Since the Romans established the settlement of Londinium almost 2,000 years ago, it has been something of a honeypot for traders, merchants and moneymen.<\/p>\n

Some of those that set up businesses in the City formed groups that evolved into livery companies \u2013 ancient trade associations that represent a particular trade or profession.<\/p>\n

There are currently 113 livery companies representing some of the most obscure crafts and skills. And it is in the shadow of the headquarters of one of them \u2013 The Worshipful Company of Girdlers \u2013 that Bovis is currently squeezing in the 2 Aldermanbury Square development. A 13-storey above-ground office scheme with a two-storey basement box is being built on an existing site hemmed in by London Wall and Basinghall Street.<\/p>\n

It is an ambitious project. Not just for its construction and civil engineering excellence, but for the scale of the embodied carbon savings it has made on the scheme for Great Portland Estates (GPE), the client. \u201cGPE has a 2030 carbon target of 572KgCO2<\/sub>e\/square metre Gross Internal Area (GIA) for all its new-build projects,\u201d explains Bovis project director Tom Walker. \u201cWhen we first engaged with the client we saw an opportunity and committed to helping them meet that target five years ahead of schedule.\u201d<\/p>\n

The early engagement of Bovis helped address the complexity of the scheme’s enabling works. The team \u2013 under the firm\u2019s previous name Lendlease \u2013 won the contract for the scheme in December 2021 but didn\u2019t get to start work on site until April 2024.<\/p>\n

During the intervening period, the team was able to forensically examine every stage of the build process and work out where and carbon savings could be made. This ensured the project is well on course to not just hit those targets, but to shatter them. \u201cSuccessful projects are generally those where the team has had time to develop and work together properly. The early engagement on this project has enabled us to do that,\u201d says Walker.<\/p>\n

Bovis looked at each of the construction packages with a view to making carbon savings across all of them. The first package to complete the exercise \u2013 steelwork \u2013 has achieved 105KgCO2<\/sub>e\/square metre GIA \u2013 an astonishing 50 per cent reduction on Bovis\u2019 own Stage 4 Whole Life Carbon Assessment, which came in at 207KgCO2<\/sub>e\/square metre GIA. It has even beaten the team\u2019s initial target of reducing the Stage 4 measure to 179KgCO2<\/sub>e\/square metre GIA.<\/p>\n

Unsurprisingly, Walker is pretty chuffed with these scores, but he is keen to point out that the buy-in from all members of the project team has been crucial.<\/p>\n

\u201cAll of our principle subcontractors and suppliers have really taken on board what we are trying to do here and have been fully committed to helping us all achieve those targets and go beyond,\u201d he says.<\/p>\n

The fact that the original building on the site was relatively new also helped. 2 Aldermanbury Square is replacing an early 1990s-built 10-storey steel-framed, stone-clad office block. Much of the steel from this building has been salvaged for use in the new structure and other schemes across London. In all, 40 tonnes of structural steel has been reused on the Aldermanbury Square site by specialist subcontractor William Hare, mainly in the upper two storeys.<\/p>\n

\u201cThankfully, with the original building being barely 30 years old, its as-built records were very accurate \u2013 which helped us to assess what steel we could use in the new structure and where,\u201d explains Walker.<\/p>\n

Sourcing different grades of steel produced using electric arc furnaces (EAFs), optimising steelwork sizes and upgrading steel column strength grades from S355 to S460 and S460 HiStar steel, also helped the team improve its carbon score.<\/p>\n

The structure itself is based on a 9×12 metre internal grid with 356x406mm steel columns and 533x210mm beams around a central slip-formed reinforced concrete core. This L-shaped core features two sets of stairs, eleven lifts and toilets on either side. The floor slabs are 150mm metal decks manufactured using EAF steel. Again, the team looked at methods to reduce the carbon footprint. They used a concrete mix with a 70 per cent GGBS cement replacement in the slabs and a calcine clay replacement mix in the back-blinding in the basement slabs.<\/p>\n

\u201cGGBS is perfect as a replacement for some of the cement content in structural concrete, but as it is an industrial byproduct there are issues about sourcing it in the future. We used the calcine clay as a replacement instead of GGBS in the non-structural concrete where we could,\u201d says Walker.<\/p>\n

Similarly innovative concrete-mix designs were used to provide blast protection cladding to the steel raking columns that stretch from ground level to level three.<\/p>\n

As the raking columns needed to be installed before the concrete cladding, the team experimented with bespoke steel shuttering at specialist subcontractor Keltbray\u2019s depot in Silvertown, east London.<\/p>\n

\u201cThe concrete needed to be pumped from the bottom of the shuttering up \u2013 so there were technical challenges that needed to be overcome. The mix needed to be fluid enough to enable that but without causing any segregation of the aggregates. It took five or six efforts to get the
\nmix design right,\u201d says Walker.<\/p>\n

With plant rooms, end-of-trip facilities, toilets and changing rooms in the basement \u2013 and similar on every floor of the electrically powered in use building \u2013 the 500-strong site workforce is laser focused on the scheme\u2019s delivery date of February 2026.<\/p>\n

Everything is on track so far. Indeed, the steel frame top-out was completed a month earlier than scheduled.<\/p>\n

Perhaps rather than better-avoided, there\u2019s something in long lead-in times after all.<\/p>\n

\n

The changing face of demolition<\/h3>\n

The work that specialist contractor Keltbray put in during the demolition, soft-strip, enabling works, basement and core has been key to the success of the 2 Aldermanbury Square scheme.<\/p>\n

By carrying out exacting pre-demolition audits, the team was able to salvage 1,800 tonnes of the existing steel frame for reuse, enabling the steel to be cut and removed at the optimum lengths for reuse without causing any damage or impacting its future structural performance.<\/p>\n

Keltbray\u2019s work continued below ground, too. A contiguous piled wall was installed across the basement shared with the adjoining property, and the existing pile caps and ground beams were removed using traditional and targeted explosive demolition techniques. With a disused General Post Office tunnel running beneath the site, the sections above the tunnel were plunge wire sawn through and lifted out in 5-tonne sections. \u201cWe couldn\u2019t reuse the existing foundations and basement box due to the loading requirements of the new building. The new basement slab is up to 1.2 metres thick,\u201d says Walker.<\/p>\n<\/div>\n

\n

Walking the Highwalk<\/strong><\/p>\n

\"\"In post-war London, when the car was king, planners wanted to prevent pesky pedestrians from interrupting the smooth traffic flow around the city. Their solution was the introduction of \u2018pedways\u2019 \u2013 elevated sections of walkway that enabled Londoners to navigate the city without fear of being run over by an errant Ford Prefect or Morris Minor.<\/p>\n

At one point, it was part of planning policy to include a section of pedway for any new development as a condition of consent. But the network never really took off as intended and the policy had been quietly dropped by the mid-1980s.<\/p>\n

Recently the idea has been revisited and part of the development at 2 Aldermanbury Square includes the reinstatement of a section of the Bassishaw Highwalk that spans London Wall and links the Guildhall complex with the Barbican Centre\u2019s pedway network. This section of the Highwalk is a weathered steel link that runs through the footprint of the 2 Aldermanbury Square site and on to the Guildhall site.<\/p>\n

Completing this link proved a headache for the William Hare and Bovis team. With weight restrictions on London Wall negating the use of large mobile cranes to lift the Highwalk into position, the walkway was manufactured in sections, five of which were brought in during night-time working and suspended from temporary works structures beneath the building\u2019s podium. Here they were bolted together before being inched into position using a Self-Propelled Modular Transporter (SPMT).<\/p>\n

\u201cIt took two weeks for the process to be completed. The sections were bolted together with hi-tensile bolts but the ribs on the outside of the sections \u2013 which help improve their overall rigidity \u2013 are welded,\u201d says Walker.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project value: \u00a3200m Delivery architect: Allies and Morrison Structural engineer: Arup Demolition and enabling works: Keltbray Steel frame: William Hare MEP design: Sweco Tower cranes: Wolffkran Start on site date: April 2024 Completion date: …<\/p>\n","protected":false},"author":82076,"featured_media":535859,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ep_exclude_from_search":false,"footnotes":""},"categories":[557],"tags":[],"class_list":["post-535664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-project-reports"],"yoast_head":"\nGreen city: reusing steel to build a new block in London | Construction News<\/title>\n<meta name=\"description\" content=\"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Green city: reusing steel to build a new block in London\" \/>\n<meta property=\"og:description\" content=\"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Construction News\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/CN.community\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-28T12:23:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"620\" \/>\n\t<meta property=\"og:image:height\" content=\"414\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Paul Thompson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CNplus\" \/>\n<meta name=\"twitter:site\" content=\"@CNplus\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Paul Thompson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\"},\"author\":{\"name\":\"Paul Thompson\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74\"},\"headline\":\"Green city: reusing steel to build a new block in London\",\"datePublished\":\"2026-01-28T12:23:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\"},\"wordCount\":1452,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp\",\"articleSection\":[\"Project Reports\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\",\"url\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\",\"name\":\"Green city: reusing steel to build a new block in London | Construction News\",\"isPartOf\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp\",\"datePublished\":\"2026-01-28T12:23:12+00:00\",\"author\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74\"},\"description\":\"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project\",\"breadcrumb\":{\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage\",\"url\":\"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp\",\"contentUrl\":\"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp\",\"width\":1024,\"height\":683,\"caption\":\"2 Aldermanbury Square is replacing an early 1990s-built 10-storey office block\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.constructionnews.co.uk\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Green city: reusing steel to build a new block in London\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/#website\",\"url\":\"https:\/\/www.constructionnews.co.uk\/\",\"name\":\"Construction News\",\"description\":\"Read UK Construction Industry News, Analysis, Opinion and data\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.constructionnews.co.uk\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74\",\"name\":\"Paul Thompson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/image\/d7e3108e2b38643871095f126aacb52e\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/cf0d4a09caa4ebb04991387e61a58ba8a880c9ab693dd51505565c91d02aa427?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/cf0d4a09caa4ebb04991387e61a58ba8a880c9ab693dd51505565c91d02aa427?s=96&d=mm&r=g\",\"caption\":\"Paul Thompson\"},\"url\":\"https:\/\/www.constructionnews.co.uk\/author\/edbreretonguestpaulthompson\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Green city: reusing steel to build a new block in London | Construction News","description":"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/","og_locale":"en_GB","og_type":"article","og_title":"Green city: reusing steel to build a new block in London","og_description":"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project","og_url":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/","og_site_name":"Construction News","article_publisher":"https:\/\/www.facebook.com\/CN.community","article_published_time":"2026-01-28T12:23:12+00:00","og_image":[{"url":"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp","width":620,"height":414,"type":"image\/webp"}],"author":"Paul Thompson","twitter_card":"summary_large_image","twitter_creator":"@CNplus","twitter_site":"@CNplus","twitter_misc":{"Written by":"Paul Thompson","Estimated reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#article","isPartOf":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/"},"author":{"name":"Paul Thompson","@id":"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74"},"headline":"Green city: reusing steel to build a new block in London","datePublished":"2026-01-28T12:23:12+00:00","mainEntityOfPage":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/"},"wordCount":1452,"commentCount":0,"image":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage"},"thumbnailUrl":"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp","articleSection":["Project Reports"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/","url":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/","name":"Green city: reusing steel to build a new block in London | Construction News","isPartOf":{"@id":"https:\/\/www.constructionnews.co.uk\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage"},"image":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage"},"thumbnailUrl":"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp","datePublished":"2026-01-28T12:23:12+00:00","author":{"@id":"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74"},"description":"Project name: 2 Aldermanbury Square Client: Great Portland Estates Main contractor: Bovis Contract type: JCT 2016 Design and Build (amended) Total project","breadcrumb":{"@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#primaryimage","url":"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp","contentUrl":"https:\/\/cdn.ca.emap.com\/wp-content\/uploads\/sites\/8\/2026\/01\/ALDERMANBURY-SQUARE_1.webp","width":1024,"height":683,"caption":"2 Aldermanbury Square is replacing an early 1990s-built 10-storey office block"},{"@type":"BreadcrumbList","@id":"https:\/\/www.constructionnews.co.uk\/project-reports\/green-city-reusing-steel-to-build-a-new-block-in-london-28-01-2026\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.constructionnews.co.uk\/"},{"@type":"ListItem","position":2,"name":"Green city: reusing steel to build a new block in London"}]},{"@type":"WebSite","@id":"https:\/\/www.constructionnews.co.uk\/#website","url":"https:\/\/www.constructionnews.co.uk\/","name":"Construction News","description":"Read UK Construction Industry News, Analysis, Opinion and data","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.constructionnews.co.uk\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Person","@id":"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/a7f73029230155fb7db976790c03da74","name":"Paul Thompson","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.constructionnews.co.uk\/#\/schema\/person\/image\/d7e3108e2b38643871095f126aacb52e","url":"https:\/\/secure.gravatar.com\/avatar\/cf0d4a09caa4ebb04991387e61a58ba8a880c9ab693dd51505565c91d02aa427?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/cf0d4a09caa4ebb04991387e61a58ba8a880c9ab693dd51505565c91d02aa427?s=96&d=mm&r=g","caption":"Paul Thompson"},"url":"https:\/\/www.constructionnews.co.uk\/author\/edbreretonguestpaulthompson\/"}]}},"_links":{"self":[{"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/posts\/535664","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/users\/82076"}],"replies":[{"embeddable":true,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/comments?post=535664"}],"version-history":[{"count":7,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/posts\/535664\/revisions"}],"predecessor-version":[{"id":535667,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/posts\/535664\/revisions\/535667"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/media\/535859"}],"wp:attachment":[{"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/media?parent=535664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/categories?post=535664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.constructionnews.co.uk\/wp-json\/wp\/v2\/tags?post=535664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}