No bars, no signal predictedOne bar, reliable signal unlikelyTwo bars, may experience problems with connectivityThree bars, likely to have good coverage and receive a data rate to support basic web servicesFull bars, likely to have good coverage indoors and to receive an enhanced data rate to support multimedia services
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1 bedroom flat

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Flat
1 bed
1 bath

Key information

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Property description & features

  • 1 bedroom
  • 1 reception room
  • 1 bathroom
  • Modern
  • Period
  • Concierge
  • First Floor
  • Gym
  • Restored
  • Spa
This exquisite one bedroom apartment features an architectural history that intertwines with British heritage and offers an array of modern amenities to suit your every need.

The OWO, also known as the Old War Office and once the epicentre of British military intelligence, has been meticulously transformed into an architectural masterpiece that seamlessly blends tradition with contemporary comfort. The OWO, built in 1906, is a Grade II-listed building that has witnessed pivotal historical moments. The intricate Neo-Baroque architecture, designed by the esteemed architect William Young, features striking facades, decorative stonework, and ornate detailing that reflects the grandeur of its bygone era. This new home is a testament to the timeless elegance of the building's past, beautifully juxtaposed with the modern comforts it now provides.

The first-floor residence comprises a large open space L-shaped dining living room with a fully integrated kitchen, a spacious bedroom with an en suite bathroom, a separate guest WC for the convenience of your visitors and lift access for ease of mobility.

Enjoy the epitome of luxury living with exclusive access to the OWO's remarkable amenities. Stay in shape and relax at the exquisite swimming pool, fully-equipped gym, fitness studio, and spa designed to cater to your well-being. Entertainment is taken to the next level with a screening room, games room, and meeting rooms at your disposal. Various lounges are available for private use, perfect for hosting guests or finding a quiet place to work or unwind.

For those who appreciate fine dining, the private dining room offers access to menus from Raffles Hotel restaurants, ensuring that every meal is a culinary delight. Should you ever require assistance or information, a 24/7 concierge service is at your beck and call, attending to your every need.

The OWO, 5 Whitehall Court, stands as a luxurious ode to history and modern comfort, offering the perfect blend of historic charm and contemporary living in the heart of London. Experience the grandeur of the Old War Office and make this remarkable property your new home.


The Old War Office (OWO) is a historic and iconic building located at 5 Whitehall Court, London, SW1A. This distinguished landmark in the heart of London offers visitors a glimpse into the city's rich history and architecture.

Conveniently located near several London Underground stations, the closest tube station is Westminster, which is served by the Circle, District, and Jubilee lines. From Westminster Station, it's a short distance to Whitehall Court.

The location is also well-served by various bus routes that pass through the Whitehall area. You can check for specific bus options depending on your starting point in London.

Charing Cross Station is the nearest mainline railway station, and it's a short walk or bus ride away from the OWO.

For a unique perspective and access via the River Thames, you can take a river bus to the nearby Westminster Pier.

The OWO's central location and accessibility through London's extensive public transportation network make it a convenient and fascinating destination for history enthusiasts and visitors exploring the city's cultural heritage.

Places of interest

    A prestigious heritage postcode historically associated with London’s wealthy since the 18th century, Mayfair has never lost its affluent status and is today one of most cosmopolitan, high-net-worth areas in central London, attracting a healthy mix of UK purchasers, coupled with overseas buyers after a slice of the capital’s best address. Despite its gilded streets and prime central London location, Mayfair still retains a charming village feel with its quiet refinement complemented by upscale restaurants and luxury boutiques. From our office in the heart of Mayfair on Mount Street, Knight Frank matches homebuyers with their ideal home in Mayfair. 

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    *DISCLAIMER

    Property reference NHQ012305016. The information displayed about this property comprises a property advertisement. OnTheMarket.com makes no warranty as to the accuracy or completeness of the advertisement or any linked or associated information, and OnTheMarket.com has no control over the content provided by the agent or developer. This property advertisement does not constitute property particulars. The information is provided and maintained by Knight Frank - Mayfair.

    OnTheMarket may have applied supplementary data to this property listing, including:

    Broadband availability and predicted speed

    Broadband speed is measured in megabits per second, with the number returned showing how fast the connection is. Each reading is based on the highest predicted speed of any major broadband network for services that deliver the download speeds. The following are the different readings that we may display:

    Basic: Up to 30 Mbit/s
    Super-fast: Between 30 Mbit/s and 300 Mbit/s
    Ultra-fast: Over 300 Mbit/s

    The data is updated three times a year. The checker results are predictions and should not be regarded as guaranteed. For more information, see: https://checker.ofcom.org.uk/en-gb/about-checker#Answer_0_2

    Mobile phone signal availability and predicted strength

    Mobile signal predictions are provided by the four UK mobile network operators: EE, O2, Three and Vodafone. Predictions can vary significantly from the coverage you may actually experience as a result of local factors (especially terrain). Ofcom has tested the actual coverage provided in various locations around the UK to help ensure that these predictions are reasonable. The values shown against a property can be broken down as follows:

    Clear: No bars, no signal predicted
    Red: One bar, reliable signal unlikely
    Amber: Two bars, may experience problems with connectivity
    Green: Three bars, likely to have good coverage and receive a data rate to support basic web services
    Enhanced: Full bars, likely to have good coverage indoors and to receive an enhanced data rate to support multimedia services

    Energy Performance data and Internal floor area

    Any supplementary data should not be relied upon as forming part of any property particulars and OnTheMarket cannot be held responsible for any incorrectness in this data. See here for more information.

    *Call rate information

    Calls to 0843 numbers will be charged at 4p/min from BT landlines. Calls from other networks may vary, and calls from mobiles and outside the UK will be higher. Calls to local numbers beginning with 01, 02 and 03 numbers will incur standard geographic charges from landlines and mobiles.