London has never been particularly good at standing still.
The Romans built here. The Normans arrived and built a rather substantial Tower. Medieval churches appeared, disappeared and appeared again. Victorian engineers transformed the city, post-war reconstruction changed it again and, more recently, glass and steel have filled a skyline that would have been unimaginable even a few decades ago.
Now another chapter looks set to be added.
The government has lifted its intervention in the City of London’s City Plan 2040, clearing an important obstacle to further tall-building development in the Square Mile.
At the centre of the argument was one small problem.
A castle built in the 11th century.
The Tower versus the towers
The City of London wants to accommodate further high-rise development, particularly around the eastern City Cluster. Its argument is essentially that new commercial space is needed to support investment, employment and the continued growth of one of the world’s major financial centres.
Standing nearby, however, is the Tower of London.
Construction of William the Conqueror’s White Tower began in the 1070s, and almost 950 years later its surroundings are being discussed in the context of buildings measured in hundreds of metres rather than castle walls measured in metres.
That contrast created a serious planning question: how do you allow a modern global city to grow without diminishing one of its most important historic landmarks?
Mind the gap
Historic England had proposed an alternative approach to the City’s tall-building contours, intended to provide greater protection to the setting of the Tower of London.
The issue became significant enough for Housing Minister Matthew Pennycook to intervene in June 2026, directing planning inspectors to reconsider the tall-building proposals and their potential impact on the World Heritage Site. An additional examination hearing eventually took place on 2 September.
It put the brakes on the City Plan while an unusual balancing act was examined: preserving the historic prominence of a Norman fortress while finding enough room for a 21st-century financial district to keep growing.
No pressure, then.
The City gets its answer
Following the additional examination, the planning inspectors concluded that the City Corporation’s approach struck the more appropriate balance between heritage protection and economic growth.
Matthew Pennycook subsequently lifted the ministerial direction issued in June. The government said the plan provides “substantial safeguards” for the Tower of London World Heritage Site and mitigates the risk of harm to its Outstanding Universal Value.
The City Corporation can therefore move towards adopting City Plan 2040, with the inspectors’ final report expected first and adoption planned before the end of 2026.
Old London, new London
Perhaps the most interesting thing about the whole debate is that it isn’t really a simple battle between old and new.
London has always been a city of layers.
The Tower has watched the capital change around it for the best part of a millennium. Warehouses became offices, docks became neighbourhoods and church spires gradually found themselves sharing the skyline with cranes and skyscrapers.
City Plan 2040 doesn’t give developers an unrestricted licence to build whatever they fancy. Tall-building proposals remain subject to controls covering height, form, strategic views and heritage impact, including requirements for Heritage Townscape Visual Impact Assessments.
The challenge is fitting another layer into a city already full of them.
We know a few of those London buildings ourselves
At Block Compliance Ltd, London isn’t simply somewhere we watch developing from afar.
Our passive fire protection work has taken us across the capital, from Chiswick Gate in West London to Stratosphere and Legacy Tower in Stratford, as well as developments around Imperial Wharf and Victoria Wharf in Limehouse.
We’ve carried out work including fire door surveys, fire compartmentation surveys, fire risk assessments and Building Safety Case reports across London, supporting the people responsible for keeping increasingly complex residential buildings safe and compliant.
Chiswick Gate, for example, saw our team undertake comprehensive fire door surveys covering communal and apartment entrance doors. Over in Stratford, we’ve worked at the 30-plus-storey Stratosphere and Legacy towers, where the scale of high-rise residential living makes properly managed passive fire protection particularly important.
It means that when we talk about London’s changing skyline, we’re not just admiring it from street level. Quite often, we’re working inside it.
A skyline is never really finished
For those of us working around buildings, compliance and the built environment, this is what makes London endlessly fascinating.
A structure approaching its 1,000th birthday can still influence the shape, height and design of buildings that haven’t even been constructed yet.
At the same time, the needs of a modern city continue to change.
Protect the past. Make room for the future. And somehow make the two work together.
London has been attempting that particular trick for centuries.
We suspect it isn’t finished yet.
