Ashwell London Jointly Pre-Lets 100% of 25 Baker Street, Marylebone, W1

Practical completion has been achieved this week at Derwent London’s ground-up 25 Baker Street scheme. Ashwell London has successfully jointly pre-let the c.200,000 sq ft office element to five global tenants, securing long-term income and mitigating leasing void. The swift pre-letting activity represents a notable uplift in rental values within the Marylebone office submarket, highlighting the area’s appeal to occupiers seeking best-in-class, sustainable workspace.

The development has quickly established itself as a flagship project, with pre-letting activity demonstrating the depth of demand for prime offices in this location. Derwent London’s decision to progress with the redevelopment of 50 Baker Street further underscores its confidence in Marylebone, reinforcing the submarket’s position as a key office hub within the West End.

Ashwell London works closely with clients including Derwent London, Ramsbury, Lazari Investments, and Brookfield to optimise leasing strategies, delivering data-led advice, market positioning, and negotiation aligned with client objectives. Since 2008, Ashwell London has represented Derwent London, completing the leasing of c.700,000 sq ft of its assets across core central London villages.

Derwent London’s portfolio spans approximately 5.5 million sq ft of prime, design-led office and mixed-use assets, marking it as one of London’s most successful developers. The pre-letting of 25 Baker Street exemplifies Ashwell London’s commitment to combining market insight with a clear understanding of tenant requirements, delivering optimal outcomes for clients.

As a boutique agency, Ashwell London offers close, personalised professional relationships built on trust and results, complementing larger corporate advisors across London’s core office markets.

Please call us to discuss any central London project.

We will be very pleased to hear from you.