City of London warns Tower view rules could cut office development capacity

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London Tower view office dispute

Highlights

The City of London Corporation warns Historic England’s larger clear-sky gap around the Tower of London could cut development capacity by up to 1mn square feet.
Knight Frank projects prime office vacancy in the City will fall to zero by 2028, intensifying the impact of restrictions on new office supply.
UNESCO’s World Heritage Committee requires a UK site review before February 2027 amid concerns that high-rise development threatens the Tower of London’s heritage status.

Planning clash over skyline restrictions

As reported by Financial Times, the City of London Corporation is warning that Historic England’s proposal for a larger clear-sky gap around the Tower of London could sharply reduce development capacity on the district’s eastern edge. The Corporation says its earlier estimate of nearly 350,000 square feet of lost space is a minimum figure, and that the impact could reach 1mn square feet if some schemes cannot proceed at reduced heights.

The dispute centres on how the Tower’s UNESCO World Heritage status is protected as demand rises for taller office buildings in central London. Historic England wants new buildings to leave a larger uninterrupted gap of sky and to lean away from the site, while the Corporation’s own plan envisages a more clearly defined vertical edge to surrounding development.

In a submission to an upcoming planning hearing, the Corporation says the heritage body’s approach removes floorspace from the highest and most valuable parts of projects. Because upper floors usually command the strongest rents, it argues that curbs on height can undermine the financial viability of new towers altogether.

The Planning Inspectorate is holding two hearings this week on whether the Corporation’s plan for new buildings at the City’s eastern boundary or Historic England’s alternative should move forward. Housing minister Matthew Pennycook requested additional sessions after hearings on the same issue were held last year.

Office market and heritage stakes

The clash comes as London’s office market remains tight, with companies continuing to take space despite the shift to hybrid work. Knight Frank forecasts that the vacancy rate for the highest-quality office space in the City will fall to zero by 2028, increasing the commercial significance of any limits on new supply.

The Tower of London draws nearly 3mn visitors a year, but some figures in the City are questioning whether World Heritage status justifies the potential economic cost of restricting development. At a meeting in July, UNESCO’s World Heritage Committee expresses concern about the continuing impact of high-rise development on the site’s wider setting and asks the UK to organise a visit before February 2027 to assess its state of conservation.

Historic England says it wants solutions that reduce the risk of further harm to the Tower of London World Heritage Site while still allowing major economic growth. It argues that limiting harm is vital to conservation and important to minimising the risk of the landmark being placed on the List of World Heritage in Danger.

Tom Sleigh, chair of the City of London’s Planning and Transportation Committee, says the City and the Tower have grown together for nine centuries and should not be treated as competing interests. He adds that businesses need a decision soon.

In our earlier article on the British Chambers of Commerce’s updated UK outlook, we noted that the 2026 growth forecast was nudged higher as businesses proved resilient after recent geopolitical shocks, even as the recovery remained modest. The BCC also highlighted lingering headwinds from weak business investment and a softening labour market, keeping the broader outlook cautious.

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