War offices, police headquarters, railway monuments, banks and department stores are becoming luxury places to stay. The conversions are opening buildings once reserved for officials, while renewing a difficult debate over who gets access to Britain’s architectural inheritance.
LONDON | Published at 2:44 p.m. ET
For generations, some of London’s most imposing buildings were designed to keep ordinary people out.
The Old War Office guarded Britain’s military secrets. Great Scotland Yard served the Metropolitan Police. A modernist building in Grosvenor Square functioned as the heavily protected United States Embassy. The Midland Bank’s headquarters projected the authority of British finance.
Today, travelers can sleep, eat or drink inside all of them.
London’s latest hotel boom is being driven partly by adaptive reuse, the practice of giving an existing building a new function instead of demolishing it. In the capital, the trend has turned government offices, courthouses, railway buildings, banks and department stores into some of the city’s most ambitious accommodations.
The conversions promise to preserve buildings that might otherwise deteriorate or remain inaccessible. They can also concentrate public history behind prices that many London residents could never afford.
That tension will become even more visible as two of the capital’s unmistakable landmarks enter the hotel business. Admiralty Arch is nearing completion as a Waldorf Astoria, while the BT Tower is being prepared for a much longer transformation that could reopen parts of the structure to the public.
These projects raise a fascinating question about modern London: Is a historic building better preserved as a hotel than left vacant, heavily secured or at risk of demolition?
There is no universal answer. The best conversions allow visitors to understand what the building once represented. The weakest merely use history as expensive decoration.
Here are the London landmarks where travelers can already spend the night, followed by the major conversions still to come.
Raffles London at The OWO: Britain’s military headquarters becomes a grand hotel
Few conversions capture the trend as dramatically as Raffles London at The OWO.
The massive Edwardian building on Whitehall opened in 1906 as the War Office, the administrative center of Britain’s military establishment. Its corridors were used by political leaders, military officers and intelligence personnel. Winston Churchill worked in the building, and Ian Fleming, who created James Bond, also had connections to its intelligence history.
For decades, most of the structure remained inaccessible to the public.
Following an extensive restoration, Raffles London opened at The OWO in September 2023. The development includes 120 hotel rooms and suites, private residences, restaurants, bars and a large underground wellness complex.
The restoration retained the building’s monumental scale, including its grand staircase, long corridors, stonework, fireplaces and carved details. The former library became an afternoon tea room, while spaces connected to intelligence work inspired the hotel’s discreet Spy Bar.
The historic transformation reportedly cost more than $1 billion. That scale produced an exceptionally polished hotel, but it also demonstrates the economics driving these projects. Restoring a vast protected structure is expensive, and luxury hospitality is one of the few commercial uses capable of supporting the work.
The strongest reason to visit is not simply the association with Churchill or Fleming. It is the chance to enter a building that embodied the guarded machinery of the British state.
The hotel’s current operations have not remained static. Café Lapérouse, one of The OWO’s original high-profile restaurants, has closed, showing that even a landmark hotel must continually adjust its dining and hospitality businesses.
Raffles London at The OWO remains the most complete example of Whitehall’s transformation from administrative fortress into international luxury destination.
Great Scotland Yard Hotel: From police headquarters to Hyatt luxury
Great Scotland Yard gave its name to one of the world’s most recognizable police institutions.
The original headquarters of London’s Metropolitan Police occupied buildings near Whitehall from 1829 until the force moved to the Victoria Embankment in 1890. The area became associated with famous investigations and the creation of modern urban policing.
The building now housing the Great Scotland Yard Hotel later served police and government functions, including use by the Ministry of Defence.
It reopened as a luxury hotel in 2019 and now operates within Hyatt’s Unbound Collection. Its interiors use police and crime history as design material, incorporating archival imagery, uniforms, shields, evidence-inspired displays and references to famous investigations.
That approach can easily become theatrical. Great Scotland Yard largely avoids turning the building into a crime-themed attraction by allowing the architecture and curated objects to carry the story.
Its location near Trafalgar Square, Whitehall and the Houses of Parliament gives visitors an unusually direct relationship with Britain’s political center.
The conversion also illustrates an important difference between preserving a facade and preserving institutional memory. A historic exterior may survive while the original function disappears completely. Great Scotland Yard’s designers responded by placing objects and visual references throughout the hotel, helping guests recognize that the building had a life before hospitality.
St. Pancras Renaissance Hotel: A Victorian railway palace saved from destruction
The St. Pancras Renaissance Hotel occupies one of London’s great Gothic Revival landmarks.
Designed by Sir George Gilbert Scott, the Midland Grand Hotel opened in 1873 beside St. Pancras station. Its red-brick exterior, pointed arches, towers and richly decorated interiors were intended to advertise the prosperity and ambition of the Midland Railway.
The hotel closed in 1935. The building was subsequently used as railway offices and gradually deteriorated. By the 1960s, St. Pancras station itself was threatened with demolition.
A successful preservation campaign helped save the complex. The original hotel building was later restored as the St. Pancras Renaissance, which opened in 2011.
The Grand Staircase remains the architectural centerpiece. Its high windows, decorative ironwork and painted walls have appeared in films, fashion photography and music videos. The restoration also brought the former booking office back into public use as a bar and restaurant.
The current Booking Office 1869 occupies the historic railway ticket hall. Its name refers to the original booking office and the period when the station was being completed.
Unlike some landmark conversions, St. Pancras retains a direct connection to its original purpose. International and domestic trains still operate beside it. Guests do not merely sleep in an old railway building. They inhabit part of a functioning transport landmark.
That continuity makes the hotel one of London’s most convincing examples of adaptive reuse.
The Ned: Banking power converted into social spectacle
The Ned occupies the former Midland Bank headquarters in the City of London.
Designed by Sir Edwin Lutyens, the building opened in the 1920s and was constructed to convey financial permanence. Its grand banking hall featured high columns, stone counters and a vast open floor.
After the bank left, the building was transformed by Soho House and the Sydell Group. It opened as The Ned in 2017, taking its name from Lutyens’ nickname.
The old banking hall now operates as a large dining and social space with multiple restaurants, live music and rows of seating arranged among the original columns. The basement contains the bank’s former vault, including a monumental circular door.
The Ned does not attempt to preserve the silence or seriousness of a financial institution. It turns the building inside out, replacing controlled banking activity with dining, entertainment, hotel rooms and private club spaces.
That makes it one of the most dramatic changes of use on the list.
The architecture still communicates power, but its audience has changed. Bank executives and customers have been replaced by hotel guests, diners, club members and visitors taking photographs beneath the columns.
The Chancery Rosewood: Cold War diplomacy enters its luxury era
The former United States Embassy in Grosvenor Square represents a different kind of London landmark.
Designed by Finnish American architect Eero Saarinen, the modernist building opened in 1960. Its broad facade and gilded eagle made it instantly recognizable. After terrorist attacks increased security concerns, barriers and defensive measures gradually separated the embassy from the surrounding square.
The United States moved its embassy to Nine Elms in 2018. The Grosvenor Square building was then transformed into The Chancery Rosewood.
Architect David Chipperfield’s redesign preserved Saarinen’s essential modernist character while removing later security additions and reconnecting the property with its surroundings. The gilded eagle by Theodore Roszak remains above the entrance as a reminder of the building’s diplomatic past.
The hotel contains 144 suites, restaurants, bars and wellness facilities. Its design uses 1960s references without turning the property into a rigid period reconstruction.
The Chancery is important because it expands the meaning of architectural heritage. London preservation debates often focus on Victorian, Georgian or Edwardian buildings. Saarinen’s embassy demonstrates that postwar modernism is also old enough, significant enough and vulnerable enough to require careful protection.
Its conversion also changes the building’s relationship with Grosvenor Square. A diplomatic fortress has become a hospitality venue, although access is still shaped by the economics of an exceptionally expensive Mayfair property.
Six Senses London: The Whiteley department store becomes a wellness hotel
Whiteleys began as a small shop founded by William Whiteley in the 1860s and grew into one of London’s earliest department stores.
The grand Queensway building opened in 1911. Whiteleys later struggled as shopping patterns changed, and the department store closed in 2018.
The redevelopment retained the historic facade and dome while replacing or reconstructing substantial portions of the interior. Six Senses London opened within the larger Whiteley development in 2026, bringing 109 hotel rooms and suites, residences, restaurants and a large wellness complex.
The hotel’s identity is strongly connected to health and wellness rather than the building’s former retail function. Its spa spans approximately 2,300 square meters and includes treatment rooms, recovery technology and an apothecary-like Alchemy Bar.
The conversion is less intact than St. Pancras or the Old War Office because much of the site underwent extensive redevelopment. Still, the surviving exterior preserves a familiar Queensway landmark and keeps the Whiteley name in public use.
It also reflects the changing role of department stores. Buildings once organized around shopping are increasingly being converted into mixed-use developments containing housing, restaurants, wellness spaces and hotels.
Courthouse Hotel London: Magistrates’ cells beside Carnaby Street
The Courthouse Hotel on Great Marlborough Street occupies a former magistrates’ court.
The building heard cases involving some of the most recognizable figures in British popular culture, including Mick Jagger, Keith Richards, John Lennon and Oscar Wilde. Its location beside Carnaby Street makes the transition from courtroom to hotel feel particularly suited to Soho’s layered history.
Original holding cells survive and have been incorporated into the hotel’s bar. Courtroom spaces have also been repurposed for events and hospitality.
The hotel’s official description emphasizes its retained cells and panelled courtrooms, allowing visitors to encounter the building’s former function directly rather than through photographs alone.
A related property, the Courthouse Hotel Shoreditch, occupies the former Old Street Magistrates Court and police station. Its Judge and Jury restaurant and Jailhouse Bar similarly retain courtroom and holding-cell references.
These conversions can risk trivializing institutions where people faced imprisonment and punishment. Their success depends on whether history is treated as context or reduced to novelty.
Town Hall Hotel: Municipal government becomes an East London stay
Bethnal Green Town Hall opened in the early 20th century and expanded in the 1930s. Its architecture reflected the civic ambition of a growing East London borough.
After local-government reorganization reduced the building’s original purpose, it was eventually converted into the Town Hall Hotel, which opened in 2010.
The redevelopment combined restored council chambers, wood paneling and civic interiors with modern additions. The property now contains hotel rooms, apartments, restaurants and event spaces.
Unlike the Whitehall conversions, Bethnal Green’s town hall belonged to local government rather than the national establishment. It represents the civic architecture of council services, public administration and neighborhood politics.
That makes the building historically important in a quieter way. Its conversion preserved a structure that could easily have become obsolete after its municipal use ended.
Admiralty Arch: London’s monumental gateway prepares for guests
The most anticipated conversion is Admiralty Arch.
The Grade I-listed structure stands between Trafalgar Square and The Mall, creating a ceremonial entrance toward Buckingham Palace. Commissioned by King Edward VII in memory of Queen Victoria, it was completed in 1912 and used by the Admiralty and other government departments.
The building has never previously operated as a hotel.
It is being transformed into Waldorf Astoria London Admiralty Arch, with approximately 100 rooms and suites, restaurants, bars, a spa and major event space. Plans include restaurants connected with chefs Clare Smyth and Daniel Boulud.
Hilton announced an autumn 2026 debut, but current booking information requires caution. Industry reporting indicates that overnight reservations may not be widely available until March 2027, even if restaurants or selected public spaces begin opening earlier.
Travelers should therefore confirm operating dates directly before building a London trip around the hotel.
The conversion is symbolically significant because Admiralty Arch is not simply an old office building. It is part of London’s ceremonial landscape.
Turning it into a hotel will provide new access to interiors that were previously closed, but it also privatizes space within a national monument. Whether the finished property feels like a preserved landmark with hotel rooms or a hotel wearing a landmark as its facade will be closely watched.
The BT Tower: A 1960s symbol awaits a new public life
The BT Tower is the longest-range project in London’s conversion pipeline.
Opened as the Post Office Tower in 1965, it became a symbol of Britain’s telecommunications age. Its rotating restaurant was once a major attraction, but regular public access ended decades ago.
American hotel operator MCR purchased the tower from BT in 2024 for £275 million, or approximately $350 million at the exchange rates reported at the time.
The proposed transformation could include hotel accommodation, dining, cultural space and publicly accessible areas. Design work has evolved, and the project remains years away from completion.
Current planning estimates suggest construction may not begin until approximately 2029 because BT must first remove communications equipment and complete decommissioning. The hotel might not open until around 2033.
The long schedule is understandable. The BT Tower was designed as communications infrastructure, not as a building filled with ordinary hotel floors. Converting it requires resolving structural, access, fire-safety, servicing and preservation challenges.
If completed well, the hotel could return one of London’s great views to the public.
Preservation or privatization?
London’s landmark hotels reveal both the promise and the compromise of adaptive reuse.
Hotel developers can provide the enormous capital required to repair stonework, restore protected interiors and modernize heating, plumbing, accessibility and fire systems. Their investments can reopen buildings that governments or corporations no longer need.
But luxury conversion also changes the meaning of public access.
A former government building may technically become more accessible while remaining economically out of reach. A person who could never enter the Old War Office can now walk into parts of The OWO, but staying overnight can cost more than many London households spend on housing in a month.
The question is not whether every historic building should become a museum. London cannot preserve its entire architectural inheritance through public funding alone.
The better standard is whether a conversion respects the building, explains its history and provides meaningful public access beyond the most expensive guest rooms.
St. Pancras succeeds because it remains part of an active station. The Ned retains the spectacle of its banking hall. Great Scotland Yard and the Courthouse properties preserve visible evidence of their former purposes. The OWO opens spaces once associated with military secrecy.
The next tests will be Admiralty Arch and the BT Tower.
London has always reused its buildings. Palaces became offices, homes became clubs and warehouses became apartments. The current hotel boom is another chapter in that long process.
What makes these conversions extraordinary is the scale of the history involved. Travelers are no longer merely staying near London’s landmarks.
Increasingly, they are sleeping inside them.
Reporting and interview disclosure
This article is an original Consumerlite News report and analysis based on hotel disclosures, architectural histories, heritage documentation and current hospitality reporting.