Derwent London and Related Argent - partners on Old Street redevelopment
The companies announced they are working on a mixed use scheme at Old Street Quarter
29 October 2025
Derwent London has announced a strategic partnership with Related Argent to bring forward the redevelopment of the Old Street Quarter EC1 site, a 2.5-acre island plot in central London earmarked for a major mixed-use scheme.
The collaboration follows Derwent’s earlier feasibility work, which identified potential for a substantial campus-style development incorporating residential, co-living, student accommodation, office space, and hotel uses. While Derwent is not due to formally acquire the site until late 2027, the early partnership is intended to shape a high-quality, living-led planning application for the location.
The structure of the proposed masterplan will offer Derwent flexibility in delivery, potentially including joint ventures, forward funding, or plot sales, depending on future market conditions.
The partnership brings together two experienced London developers. Related Argent’s track record in large-scale regeneration projects complements Derwent London’s design-led development model. Both companies also maintain established relationships with key planning and delivery stakeholders in the capital.
Paul Williams, Chief Executive of Derwent London, said: “The site is one of the few remaining significant standalone plots in central London.” He added that Related Argent had demonstrated a strong understanding of complex regeneration projects through a competitive tender process.
Tom Goodall, Chief Executive Director at Related Argent added that the two companies share an ambition to create long-term value through high-quality placemaking and delivery.
No timeline has yet been confirmed for submission of a planning application, but the partners indicated that masterplanning work would begin immediately.