Railpen, manager of the £34bn railways pension scheme in the UK, has announced that Brabners has opened an office space at 4 Coleman Street, one of the most compelling office redevelopments in the heart of London. The new space amplifies the leading UK independent law firm’s national reach, supporting its collaborative, flexible, and innovative ways of working. Brabners has taken 5,302 sq ft on 4 Coleman Street’s first floor, delivered to a fully-fitted, best-in-class specification. The space includes refined reception areas, collaboration zones and meeting rooms, all designed with a strong emphasis on wellbeing, functionality, and productivity. The opening reinforces the appeal of high-quality, experience-led workspace to premier occupiers seeking prime city locations with strong amenity provision. Situated just two minutes’ walk from Moorgate Station, 4 Coleman Street offers a range of offices from 3,402 to 7,600 sq ft, across fitted and Category A floors. Targeting BREEAM Excellent and WELL Enabled certifications, 4 Coleman Street provides efficient, flexible and contemporary environments completed by premium facilities and end-of-journey amenities, including fitness studios and cycle storage. Emily Atkinson, Senior Transactional Manager at Railpen, commented: “Brabners taking space at 4 Coleman Street is a fantastic outcome and reflects our ability to create spaces for occupiers that improve day-to-day experience, and support flexibility, productivity, collaboration, and wellbeing. This deal underscores our commitment to putting the occupier at the heart of everything we do, and ensuring our assets contribute to the long-term economic vitality of the UK’s core cities.” Nik White, Managing Partner at Brabners, also said: “4 Coleman Street is a well-designed space that reflects our values, in particular by being operated with such high sustainability standards and by providing a level of amenity that genuinely supports the wellbeing of our colleagues. Of course, the office is only as good as the people in it and the relationships we build. What we’ve built in the North – our culture and commitment to doing things differently – comes with us. That’s what being purpose-led actually means to us.” Railpen’s office portfolio spans more than 600,000 sq ft of commercial space in London and Birmingham, including 101 Bayham and Jamestown Courtyard in Camden, 26 Red Lion Square in Holborn, 12 Smithfield and 125 Wood Street in the city, Thames Wharf in Hammersmith, as well as Multistory, located in the heart of Birmingham.  This programme focuses on repositioning and re-lifting existing assets to meet the flight-to-quality demand from occupiers seeking modern, amenity-rich, and sustainable city-centre offices. It also includes 1.9 million sq ft in Cambridge, made up of 11 assets, which include Mill Yard, the 180,000 sq ft mixed-use campus, and Botanic Place, its landmark 333,000 sq ft office building, both currently under construction. Building, Design & Construction Magazine | The Choice of Industry Professionals

Kajima Properties Europe (KPE) has appointed Carter Gregson Gray (CGG) as architect for the redevelopment of 1 St John’s Square, following KPE’s recent acquisition of the prime Farringdon office site on behalf of investors. Subject to planning approval, KPE intends to undertake a comprehensive reimagining and sensitive expansion of the 27,000 sq ft building. CGG will lead the architectural design, working closely with KPE’s in‑house development team to deliver a modern, sustainable and future‑focused workplace. CGG brings a strong design ethos and proven capability to the project. The practice specialises in the design and delivery of complex, technical buildings at all scales and consistently challenges convention through innovative and sustainable solutions. Its experience spans both emerging and historic contexts, with a focus on creating confident, contextual architecture that delivers meaningful social and environmental impact. CGG’s recent work includes securing planning approval for the transformation of the London Stock Exchange, a milestone that underscores the practice’s ability to deliver high‑profile, sensitive and design‑led commercial schemes. The architectural design of the 1 St John’s Square project will be led by an experienced core team from CGG (see notes to editors for full bios): Located just a few minutes’ walk from Farringdon Station and benefitting from exceptional connectivity via the Elizabeth Line, Thameslink and the London Underground, the area continues to attract leading financial, technology and creative occupiers. The scheme will reflect KPE’s commitment to ESG‑driven development and best‑in‑class design, building on the company’s strong track record in delivering high‑quality workspace. The acquisition and architect appointment further strengthen KPE’s expanding central London portfolio, which includes 77 Coleman Street, 16 Berners Street and 27 Soho Square. About Kajima Properties Europe (KPE) KPE is an established UK and European development and investment management business supported by the global strength of its parent company, Kajima Corporation. Founded in Japan in 1840, Kajima Corporation has grown into one of the world’s leading real estate and construction groups, giving KPE the heritage and global reach to deliver with confidence. KPE specialises in developing, repositioning, and investing across sectors where long-term value is identified, spanning logistics, living, and workspace. The business originates and manages investments for both its own balance sheet and investor clients. KPE has an exceptional track record in managing core+ and value-add strategies, outperforming respective benchmarks to ensure investors exceed target returns. kajima-properties.co.uk About Carter Gregson Gray Carter Gregson Gray are London based architects with international experience and a global outlook. We design thoughtful places to live, work, learn and play. We work within emerging and historic settings and have demonstrated our ability to deliver confident buildings in sensitive locations. We have in depth experience of designing and delivering complex, technical buildings at all scales and use this experience to challenge and question the norm with innovative, sustainable solutions. We are committed to delivering useful, beautiful architecture with a positive social and environmental impact. www.cartergregsongray.com Building, Design & Construction Magazine | The Choice of Industry Professionals

Mitsubishi Estate London (MEL) and Stanhope have secured full occupancy as international law firm King & Spalding will be expanding its office space in the building by signing the final floor available. Taking the highest office floor in the building at Level 47 on a 12-year lease, the new office space totals 8,479 sq ft, increasing King & Spalding’s total footprint to seven floors and almost 60,000 sq ft. King & Spalding signed on Levels 27-31 in 2023 and expanded into the 41st floor in 2025.  Spanning 550,000 sq ft the 47-office floor tower is now fully occupied. 8 Bishopsgate has proved to be a pioneering development that has attracted occupiers from a range of sectors from across the City and West End markets. The first development to truly deliver a range of occupier focused amenity, 10% of the building – representing 75,000 sq ft – is dedicated to amenity space. This includes the Think Tank, a dedicated 200-seat auditorium, with associated meeting rooms, alongside a range of food and beverage offerings on the ground, 1st and 26th floors. The Lookout, a free public viewing gallery and private event space on the 50th floor that offers unrivalled views of Central London. 8 Bishopsgate has exceptional sustainability credentials, as the first tower in London to achieve BREEAM ‘Outstanding’ and is EPC A rated. Kevin Darvishi, Head of Leasing at Stanhope said: “Reaching full occupancy at 8 Bishopsgate is a landmark moment and clear endorsement of the long-term vision behind the building, from its sustainability credentials through to the breadth of amenity. Following a competitive leasing process with occupiers vying for the last space in the building, King & Spalding’s continued expansion underlines how 8 Bishopsgate meets the changing needs of today’s world-class organisations in the City of London.” Shinichi Kagitomi, Chief Executive of Mitsubishi Estate London, said: “Leasing the final tranche of space at 8 Bishopsgate is a huge milestone for us. Since completion, demand for space at the building has consistently exceeded expectations, reflecting occupiers’ continued focus on best-in-class workplaces that support collaboration, wellbeing and sustainability. It is the best possible endorsement to have an existing occupier increase its presence within the building and we are pleased to have been able to accommodate King & Spalding’s expansion needs.” Tom Sprange KC, King & Spalding London Office Managing Partner, said: “We moved into 8 Bishopsgate two years ago and the fact we have taken on two new floors since then, including now the 47th floor, underscores the importance of the building to the firm’s expanding London practice. As we look forward to continued growth and new opportunities, the additional space in such an impressive building will play a vital role in realising our ambitions.” 8 Bishopsgate’s occupiers include: Access, AEW, BancTrust & Co., Bayern Landesbank, Bentley Systems, Cambiaso Risso Group, CFC, CITIC CLSA, Faegre Drinker, First Abu Dhabi Bank, Harmonic, Helios Towers, Huckletree, JB Draw Honore, King & Spalding, Mewburn Ellis, Proskauer, SCOR Investment Partners, Shinhan Bank and SThree. Knight Frank and Newmark advised MEL and Stanhope. Cushman & Wakefield advised King & Spalding. Building, Design & Construction Magazine | The Choice of Industry Professionals

Plans have been unveiled for a landmark £1bn skyscraper that is set to become the tallest building in the City of London and one of the most significant commercial developments in Europe. Developed by Aroland Holdings, advised by Perennial Holdings, alongside Stanhope and Eric Parry Architects, the project known as One London will transform the City skyline with a striking new tower rising to 309.6 metres. Formerly known as 1 Undershaft, the development is expected to become London’s tallest skyscraper, the tallest office building in the UK and the joint-tallest building in Western Europe when completed in 2033. Located at the prominent junction of Leadenhall Street and St Mary Axe, the development will deliver approximately 1.2 million sq ft of office-led accommodation at the heart of the capital’s financial district. Designed to meet the evolving needs of modern businesses, the tower will provide high-quality workspace while reinforcing the City’s position as a global centre for finance, technology and innovation. The scheme received full planning approval from the City of London Corporation in December 2025, marking a major milestone for one of the capital’s most ambitious commercial projects. The development occupies a highly connected location, situated within a short walk of six London Underground lines and the Elizabeth line, offering exceptional accessibility for workers, visitors and businesses alike. In addition to its transport connections, the site benefits from proximity to around 1,000 hospitality venues and 27 acres of public open space, helping to create a vibrant environment that supports both professional and social activity within the Square Mile. Preparatory work is already progressing, with the deconstruction of the existing St Helen’s Tower now underway. The project team expects to appoint a main contractor later this year, with full construction anticipated to commence in 2028 following the completion of deconstruction and enabling works, as well as the finalisation of development financing arrangements. Once complete, One London is expected to become one of the defining buildings of the next decade, joining the ranks of the capital’s most recognisable landmarks. Beyond its impressive scale, the development reflects the continued confidence in London’s commercial property market and the growing demand for premium, sustainable and future-focused office space in prime locations. The project also highlights the ongoing evolution of the City of London, where new generations of workplace environments are being developed to accommodate changing occupier requirements, technological advancement and increasing expectations around sustainability, wellbeing and connectivity. As construction moves closer, One London is poised to play a major role in shaping the future skyline of the capital, creating a new focal point for business, investment and architectural ambition in one of the world’s leading financial centres. Building, Design & Construction Magazine | The Choice of Industry Professionals

A wave of high-spec office schemes across London and other parts of the UK is opening up substantial new work for contractors, as developers respond to demand for energy‑efficient, grade‑A space that helps employers attract and retain staff. April’s Glenigan Construction Review reports that office project starts totalled just over £4 billion in Q1 (January–March), a 75% rise on both the previous quarter and the same period last year. London dominated activity, supported by large City of London schemes and major data centre projects. Starts in the capital were worth almost £2.9 billion in January–March, more than double a year earlier. Other regions also posted strong gains, notably the South West (starts rose 15‑fold), Scotland (up 55%), Northern Ireland (more than 16‑fold) and the North East. Looking ahead, London offers the brightest prospects. Glenigan figures show the value of office planning approvals in the capital climbed by 90% in the first quarter compared with last year. The latest Deloitte office crane survey for London highlights developer confidence in resilient occupier demand for grade‑A offices. Anticipating a potential office supply gap later in the decade, the survey finds most developers expect their pipeline to either ‘increase’ (58%) or ‘remain stable’ (34%) over the next 12 months, while three‑quarters feel ‘more positive’ about leasing demand. Refurbishments remain a key driver: they made up around two‑thirds of all new office starts in the capital last year, covering some 3.1 million sq ft. Glenigan project data also flags major City of London schemes set to break ground in the coming months. The £330 million Alliance House at 60 Gracechurch Street—a 36‑storey tower with ground and basement levels—is due to start later this summer. Bovis is the main contractor on the 52,000+ sq m project (Project ID: 24112367). Construction on the £477 million, 53‑storey office at 99 Bishopsgate (pictured) is likewise expected to begin later this summer, following detailed consent, delivering over 144,000 sq m of new space. At 1 Undershaft – The Trellis, demolition is progressing and planning conditions are being resolved ahead of a planned start next spring. The 74‑storey, £510 million office tower by developer Stanhope will provide over 154,000 sq m, is at pre‑tender, and has a 60‑month build programme. Larger schemes are becoming more prominent in the pipeline. Although the total value of underlying office planning approvals fell year on year in Q1, approvals for major projects over £100 million rose by 2%. Beyond London, approvals strengthened in the South East (up 48%), surged in the North East (almost tenfold) and climbed in Wales (up 157%). Building, Design & Construction Magazine | The Choice of Industry Professionals

Contractor Legendre UK has secured the main construction role on the major redevelopment of 50 Stratton Street in the heart of Mayfair, London, on behalf of Berkeley Estate Asset Management. Designed by acclaimed architects Stiff + Trevillion, the 135,000 sq ft office development is set to deliver a premium commercial destination tailored to the evolving demands of the central London market. The scheme has been created with a strong emphasis on sustainability, modern workplace design and long-term building performance. Targeting both BREEAM Outstanding and LEED Gold certifications, the redevelopment will introduce a highly efficient all-electric building designed to align with the growing demand for low-carbon office environments across the capital. A key feature of the project is its focus on reducing embodied carbon through innovative construction methods and material selection. Lightweight steel will be used throughout the structure, alongside the addition of four new cross-laminated timber floors, helping to minimise environmental impact while supporting modern standards of sustainable development. The redevelopment will also significantly enhance the building’s external appearance and operational efficiency. New façades featuring high-quality stone cladding, aluminium-framed glazing and curtain walling systems will create a refined architectural identity suited to Mayfair’s prestigious commercial landscape. As demand continues to grow for sustainable Grade A office space in London’s prime business districts, the project reflects a wider industry shift towards environmentally responsible redevelopment and future-ready workplaces that prioritise energy performance, occupier wellbeing and design excellence. Building, Design & Construction Magazine | The Choice of Industry Professionals

Helical plc and a vehicle managed by Orion Capital Managers have reached practical completion on the repositioning of 100 New Bridge Street, delivering a 195,000 sq ft best-in-class office scheme in the City of London. Located between Blackfriars and Farringdon stations, the landmark building has been transformed into a carbon-friendly workplace designed to meet growing occupier demand for high-quality, sustainable office space in central London. Designed by Gensler and delivered by Mace, the project has retained and upgraded much of the original structure, demonstrating how existing commercial buildings can be reimagined rather than replaced. The redevelopment introduces a striking new façade, 30,000 sq ft of additional net internal area and 9,690 sq ft of terraces across four floors, offering views towards St Paul’s Cathedral and across central London. Sustainability has been central to the scheme. Around 90% of the original structure has been retained, with materials reused, repurposed or donated where possible. As a result, the project’s embodied carbon is tracking 61.4% below the Greater London Authority benchmark for offices. The all-electric building has also achieved strong environmental and wellbeing credentials, including BREEAM Outstanding, NABERS 5-star and WELL Platinum ratings. The milestone follows the completion of the forward sale of the property to State Street on 20 May 2026. The deal, first announced in April 2025, saw the building sold for State Street’s own occupation at a net price of £333m, representing a Helical share of £166.5m. The transaction reflects a capital value of £1,712 per sq ft, or around £2,000 per sq ft on a topped-up basis, based on a capitalisation yield of 5% after deducting corporate sales costs and a notional rent free period. Proceeds from the sale will be used to repay the amount drawn under the £155m development facility, with surplus funds distributed to the joint venture partners under the terms of the agreement signed in May 2024. Matthew Bonning-Snook, Chief Executive Officer of Helical, said the completion marked “a significant milestone” for the project, describing 100 New Bridge Street as a future-focused workplace that highlights the potential of existing assets to meet modern occupier expectations while supporting carbon reduction. Aref Lahham, Founding Partner and Managing Director of Orion Capital Managers, said the project had created value through repositioning and forward selling in a supply-constrained market, reinforcing Orion’s focus on opportunities driven by clear demand and strong asset execution. Building, Design & Construction Magazine | The Choice of Industry Professionals

Three established occupiers at Exchange Quay have reaffirmed their commitment to the flagship Manchester office campus with a series of lease renewals totalling almost 27,000 sq ft. Insurance specialists First Central have agreed a new 10-year lease on their 21,600 sq ft office space, underlining their long-term confidence in the campus location. They are joined by RW Invest, which has signed a two-year renewal for its 1,364 sq ft office, and identity security experts Proof ID, which has also committed to a two-year lease extension on its 4,029 sq ft workspace. The trio of renewals highlights the continued appeal of Exchange Quay’s established office community and amenity-rich campus environment. Located at the gateway to Salford Quays and close to MediaCityUK, Exchange Quay comprises 435,000 sq ft of Grade A office space across seven buildings and benefits from its own dedicated stop on the Manchester Metrolink network. The campus has undergone significant investment in recent years, with upgraded workspaces, enhanced landscaping and a growing amenity offering designed to support occupier wellbeing and collaboration. Les Lang, Director, asset manager at Till AM commented: “It’s extremely rewarding to see occupiers choosing to stay and grow with us at Exchange Quay. Retaining high-quality businesses like First Central, RW Invest and Proof ID reflects the strength of the campus community and the continued investment we are making to deliver an outstanding workplace experience. “From a wide range of workspace solutions and upgraded offices to our on-site amenities and connectivity, we focus on creating an environment where businesses and their people can thrive.” Exchange Quay is one of the largest office campuses in the North West and is home to thousands of workers across a diverse range of sectors. The campus continues to attract strong occupier interest thanks to its combination of high-quality office space, a range of leasing options and proximity to Manchester city centre. Building, Design & Construction Magazine | The Choice of Industry Professionals