The Semaphore Tower

Chatley Heath, Surrey


Built in 1822, the Semaphore Tower is a unique survival. Commissioned in the aftermath of the Battle of Waterloo, it was once a cutting-edge building at the forefront of technology and is now a remarkable retreat in the heart of a nature reserve. Read in-depth about the restoration in our blog.

2024 free public Open Days: 22-23 June; 14-15 September

  • Dogs AllowedDogs Allowed
  • Electric Car Charging PointElectric Car Charging Point
  • Mobile signalMobile signal
  • Fire or StoveFire or Stove
  • Parking AvailableParking Available
  • BathBath
  • DishwasherDishwasher
  • ShowerShower
  • Explorer PacksExplorer Packs

Beds 1 Twin, 1 Double

4 nights
£964 equivalent to £60.25 per person, per night
Aerial view of red-bricked Semaphore Tower surrounded by the woodland of Chatley Heath nature reserve

The only remaining semaphore tower in Britain 

A unique remnant from the Napoleonic era, this Grade II* listed brick structure is the only surviving semaphore tower in Britain. It was once a building at the forefront of technology and designa vital link in a signalling chain that transmitted messages from Admiralty House in London to Portsmouth Docks in just a few minutes.

Restored during the Coronavirus pandemic  

Thanks to the generosity of over 1,152 supporters to our public appeal, contractors Valley Builders began work in early 2020 to sympathetically restore the five-storey structure. Within weeks of work beginning, the Coronavirus pandemic hit and England entered lockdown. Despite the many challenges – supply chain interruptions, maintaining social distancing in a narrow tower environment - works continued throughout the difficult year. BBC’s Countryfile visited in August 2020 to see the work underway. In early 2021, just as the building was on the brink of welcoming guests, the third national lockdown delayed opening until mid-April.  

The innovative military structure now sleeps up to four with double and a twin bedroom, two bathrooms, a cosy sitting room with a wood-burning stovetop-floor kitchen with treetop views from the kitchen sink, and a roof terrace with 360 degree views across the Home Counties and towards London. Thanks to our partners Craig & Rose, their paint has been used throughout – each colour carefully chosen to gently evoke the tower’s naval history 

The semaphore machinery has been refurbished, providing a living lesson in technological and engineering history, and we look forward to demonstrating the system on our free public open days 

In the heart of a nature reserve 

Chatley Heath itself is a nationally important site for dragonflies and damselflies, with twenty species recorded. It also attracts many rare birds. The tower is surrounded by 800 acres of woodland and heathland that can be explored by the many footpaths and cycle paths. The basement provides a bike store for those keen on exploring the area on wheels

'The tower where time stood still.' Read the FT Weekend's review of Semaphore.

Floor Plan


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Map & local info

Nestled among the trees on Chatley Heath, the Semaphore Tower stands tall looking out towards the City of London. 

Nearby, RHS Wisley is one of the world’s great gardens, with renowned plant collections and inspiring displays. Explore Cobham Mill, which after being abandoned, vandalised, and allowed to fall into disrepair for decades, has been restored and brought back to life.

A 30-minute drive away are the Surrey Hills, with 60 interesting places to visit.

The National Trust's Reigate Hill and Gatton Park also a 30-minute drive away from this Landmark, is a beautiful historic parkland designed by Lancelot ‘Capability’ Brown with Edwardian gardens.

Discover local walks for dogs with our friends at, the dog walks community.

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Essential info
What you need to know about this building
  • Yes. You are welcome to bring up to two dogs. A charge of £20 per stay is made for each dog.

    Please contact booking enquiries if you have an assistance dog, for which there is no charge.
  • The Semaphore Tower is accessed via a private road off Pointers Road. To reach Pointers Road we strongly recommend following the Landmark ‘directions’ supplied as part of our booking information. During winter months the alternative route, a minor road to Cobham, is liable to flood and may be impassable at times. During extreme winter weather the final approach to the Tower can become very icy.
  • Effingham Junction is 2.5 miles from the tower.
  • Yes, there is parking for up to 3 cars close to the tower.
  • There is oil-fired central heating and a multi-fuel stove in the sitting room.
  • Fuel is available at local outlets, further details will be provided with your booking confirmation.
  • Recently Gavin, our maintenance co-ordinator who visited Semaphore Tower, told us that there is medium signal strength for EE and Three on the top floor.  Videos were streamed without a problem. Signal strength reduced slightly at lower levels of the building.  April 2021
    To check up-to-date mobile network coverage in the area, visit* Due to the location and structure of our buildings, signal strength may differ to those indicated by
    * Links to other sites are provided for information purposes only.  We do not endorse any such websites and we are not responsible for the information, material, products or services contained on or accessible through those websites.  Your access and use of such websites remains solely at your own risk.  For further information, visit our website terms of use.
  • The kitchen is fully equipped with all plates, cutlery, fridge etc.
  • There is one bathroom on the ground floor, one shower room on the second floor, plus a toilet in the basement.
  • Yes, there is a steep winding staircase.
  • There is a roof terrace and a small garden area around the base of the tower.
  • The M25 is approximately 500ft from the property.  The motorway is in a cutting and there is dense woodland between the tower and the motorway which helps reduce the noise level.  From inside the property with the windows closed you can hear the hum of traffic.
  • There is a Type 2 Electric Vehicle charge point, delivering a 7.2kW charge, at the property. You will need to request this facility at the time of booking to ensure the outlet has been enabled for your arrival. There is a small charge to cover the cost of electricity provided.
Booking and Payment
  • If the weather is bad, please contact our booking office who will be able to tell you whether the Landmark is accessible. If the housekeeper can safely get to the building to prepare it then we consider that it is open and available for guests. However if we cannot undertake a changeover then we will do our utmost to transfer your stay to another Landmark, depending on what we have available. It may not be of a similar size or in the same part of the country as your original booking. If the building is accessible but the customer cannot travel due to poor weather in his/her local area then please be aware that Landmark will not provide a refund. However the customer may be able to claim on his/her own travel insurance. We recommend that all guests take out travel insurance when they first secure a booking.
  • We accept Maestro (if issued in the UK), Visa, MasterCard, direct transfer and sterling cheques drawn on a UK bank. Cheques should be made payable to the Landmark Trust except for Lundy stays and boat/helicopter tickets which should be payable to The Lundy Company Ltd. All payments must be in sterling.
  • The key arrangements will be included in the Further Infomation document which will be sent to you prior to your stay.
  • If your stay starts more than two months from the date you make the booking, you are required to pay a deposit of one third of the cost of your stay (or £100 per booking, if greater) at the time of booking. Camping on Lundy and The Bunk House at Llwyn Celyn must be paid for in full at the time of booking.
  • If you wish to cancel or change your booking, please contact our Booking Office on 01628 825925
  • At the moment we only accept payment in sterling.
  • Our housekeeper will leave the key in a suitable place, the details of which will be sent to you prior to your stay.
  • It depends. Some of our most popular Landmarks are booked up a long time in advance, but many can be booked at short notice. We will always have Landmarks free for the coming weekend so it’s always worth checking our availability list.
  • No, Landmarks are available to be booked for anyone.
  • No, all the information you need can be found on our website, although we’d like you to buy one anyway as it will be a pleasure to own!
Staying at a Landmark
  • Some of our Landmarks are suitable for people with disabilities or limited mobility. However, many Landmarks have steep or narrow staircases, uneven floors and thresholds, changes of level, low ceilings or beams, as well as indistinct colours on steps and in corridors. We recommend that you call Booking Enquiries on 01628 825925 if you would like to find out the suitability of a particular Landmark for anyone with a specific disability.  Further information on access when visiting Lundy can also be found here.
  • Yes, Landmarks are only available as self-catering accommodation. We do not offer bed and breakfast.
  • Landmark does not provide catering, but we can recommend Greycoat Lumleys who can arrange for expert and well-trained staff to cater for one evening or for your entire holiday. Their cooks and chefs are able to work with you to meet your specific requirements
  • You may bring up to two dogs to properties where dogs are allowed (please see specific property details for exemptions however dogs are not permitted on Lundy except assistance dogs). They must be kept off the furniture and under proper control. A charge of £20 per stay is made for each dog. Please contact booking enquiries if a registered assistance dog is supporting one of the guests, for which there is no charge.
  • Apart from two dogs (see above) no other pets are permitted.
  • Arrival is from 4pm and departure is by 10am.
  • We do not carry insurance for breakages. However we appreciate that accidents do sometimes happen. If you have a breakage during your stay, please let the housekeeper know and if appropriate we reserve the right to invoice you accordingly.
  • Yes, most of our Landmarks are perfect for children, with gardens to play in and secret places to discover. Our furniture is surprisingly robust and we positively encourage families to stay. However, some of our buildings may not be suitable for small children; for example, some of them have steep or uneven spiral staircases. We recommend that you call the Booking Enquiries team if you would like to find out the suitability of any of our Landmarks for young children.
  • Unfortunately, most of our Landmarks are not licensed for weddings. However, you may get married on Lundy.
  • All our larger Landmarks are perfect for gatherings of family or friends. You may invite an additional two guests to visit you during your stay, however they must not stay overnight. This is very important because our fire regulations specifically note the maximum number of people in any one building. In addition our properties are prepared, furnished and equipped for the number of people specified and greater numbers cause damage and excessive wear and tear to vulnerable buildings. Should this condition be ignored we shall make a retrospective charge per person per day (whether or not they stay overnight) for each guest over the permitted limit, the charge being pro-rated on the total cost of your booking.
  • We deliberately do not provide televisions and find that most people appreciate this.
  • One of the challenges of restoring unloved buildings is gaining access to them. We frequently have to negotiate rights with our neighbours and share tracks with them. In many cases tracks do not belong to us and we have no right to maintain them. Wherever possible we work with our neighbours to provide you with a good quality surface, but where this is a problem then you will be warned at the time of booking.
  • Yes, we have standard electricity sockets for UK appliances. If you are coming from outside the UK, you will need to bring your own adaptor plug(s). If you are visiting one of our European properties we have standard European electricity sockets. If you are visiting from the UK, you will need to bring your own adapter plug (s).
  • Landmark’s electrical systems have not been designed to provide continuous power from one socket over several hours.  If an ordinary socket is used to charge an electric vehicle, there is significant risk of an electrical fire and consequent danger to life.  Therefore, we are unable to allow electric vehicle charging from most of our Landmarks at present.

    We are working to provide Type 2 Electric Vehicle charge points at our properties where there is private parking.  Where this is available, please request this facility when booking the property to ensure the outlet is enabled on your arrival.  There is a small charge to cover the cost of electricity provided.  Please book this facility in advance.
  • No, we do not allow smoking in any Landmark.
  • Sometimes our kitchens and bathrooms have to be imaginatively fitted into the available space in buildings where before there were none, but they are all planned and equipped to a high and modern standard.
  • Yes, Landmarks are fully equipped with sheets and towels. All the beds are fully made up for your arrival. Except for the Llwyn Celyn Bunkhouse.
  • Yes, our kitchens are well equipped with cookers and fridges. There are freezers and dishwashers (in larger buildings) and, where space allows, microwaves as well as a wide and standard range of utensils. A full equipment list is available at time of booking.
  • Logs are provided at many of our Landmarks for an additional cost.
  • Mobile coverage varies. Some Landmarks have an excellent signal, but others have none at all. If you are concerned, you can check with the housekeeper before your arrival.
  • No. At the moment, we have decided not to implement Wi-Fi in our buildings following a consultation with our customers. Many said that they would find it useful, but many also felt that it would somehow damage the experience of staying in a Landmark. As the responses were so split, and as we have so many other initiatives requiring funding, we have decided to put this on hold for the time being.
    Except at Llwyn Celyn Bunk House where a password is available in the property when you arrive.
  • A welcome tray with tea and sugar awaits your arrival and you will find a pint of milk in the fridge. We also provide toilet rolls and a bar of soap per basin, but no other toiletries. Hairdryers are provided.

Do you have other questions?

Our Booking Enquiries team can help with information about each building.

Booking Enquiries
01628 825925
[email protected]

Opening hours
Monday to Friday 9am – 5pm


A brief history of Semaphore Tower

With Landmark Historian, Caroline Stanford.

A mid-19th century tower

The Semaphore Tower stands deep in ancient heathland near Wisley in Surrey. This unique remnant from the Napoleonic era was once a vital link in a signalling chain that transmitted messages from Admiralty House in London to Portsmouth Docks in a matter of minutes. The construction of the line was ordered in 1816 in the aftermath of the Battle of Waterloo, when foreign invasion still seemed a real possibility.

For over 20 years the urgent affairs of the Royal Navy passed back and forth along this line, relaying orders to the fleet and reporting the movements of friend and foe alike. If things had turned out differently – if there had been another war with France, if England had been invaded – this Tower in Chatley Heath might have played a key role in a great naval conflict.

The Royal Navy’s most advanced signalling system before the electric telegraph

Historically, long-range military communication was a real challenge: simple hilltop beacons signalled the arrival of the Spanish Armada in 1588. As naval warfare developed across the centuries, more sophisticated signalling systems were invented using flags or moving balls, but these were slow and unreliable. Semaphore was the solution; moveable arms on a mast that signalled letters of the alphabet.

The French invented the first semaphore system in 1794, but the British preferred to find their own solution. The first British coastal naval signal stations in the 1790s used either flags and balls or a system of shutters in a frame, but none were efficient in bad weather.

'England expects that every man will do his duty.'

Rear Admiral Sir Home Riggs Popham was fascinated by signalling. In 1800, Popham created the first flag system for individual letters, famously used by Nelson to declare ‘England expects that every man will do his duty.’ Later, he devised a semaphore with wooden arms for ship-to-ship signalling. Much easier to operate than the shutter system, it was soon adopted on land.

Yet in 1814, with Napoleon apparently safely confined on Elba, the Admiralty decommissioned all their signal stations. Napoleon’s escape and the ‘damn nearest run thing’ at the Battle of Waterloo made the Admiralty realise that such optimism has been misplaced. Eleven days after Waterloo, an Act was passed to acquire land for a new chain of signal systems, this time using Popham’s semaphore.

The only five-storey Semaphore tower

The Chatley Heath mast was the only station on the Portsmouth line that required a five-storey tower for visibility across the seven miles to its two neighbours. In 1822, on its completion, it was chosen to be the junction for another line to Plymouth. The stations were operated by Royal Naval lieutenants who were close to retirement. They worked with an assistant, possibly a former petty officer or wounded seaman.

Early reports of water ingress

Each station housed a lieutenant and his family. From the beginning, water ingress was a problem at Chatley Heath and many letters were sent by the first station superintendent there, Lieutenant Harries, to the Admiralty on the subject. In one such letter dated December 1826 he complained:

“Water still finds its way through centre of the mast even to the lower room.... great difficulty in getting any workman in neighbourhood to do any small jobs by the distance we are from their abode... my family and myself are almost poor hermits.”

New technology and new residential use

For over 20 years, orders and reports clacked up and down the line from Admiralty House to Portsmouth. But the railways were coming and with them the electric telegraph: in 1847, the semaphore lines were decommissioned.

After its decommission, needy retired naval officers and then local civilians lived in the tower until 1963. Left empty, it suffered vandalism and then a major fire in 1984. Surrey County Council and Surrey Historic Buildings Trust restored it well, and again let it residentially.

By the 21st century, water ingress was threatening the structural integrity of the tower to an alarming degree and its future was uncertainBy 2018 the tower was decaying rapidly and Surrey County Council approached Landmark for help. After a successful fundraising campaign, restoration work began in spring 2020 and, despite the complications of the Coronavirus pandemic, the building opened for holidays in spring 2021.  

A short history of the Semaphore Tower

The full history album for the Semaphore Tower

Download the childrens' Explorer pack for the Semaphore Tower

With thanks

Thank you to our supporters

We are hugely grateful to the 1,152 supporters who gave so generously to make the restoration of Semaphore Tower possible. They include:

Guardians of Semaphore Tower and other lead supporters:

Mrs S Andrew, Mr A Baker, Dr J Bull, Dr P Corry, Ms S Darling, Dr C Guettler and Ms J Graham, Mr S and Mrs R Jordan, Dr and Mrs B Moxley, Mr M Seale, Mr M Simms, Mr J Thompson, Mrs P Thompson, Professor W Tsutsui and Dr M Swann.

Patrons and other generous individuals:

Mr R Baker, Mr M Bennett MBE, Mr D Brine, Mr G Clayton, Mrs D Ford, Dr R Gurd and Ms M Black, Dr E Hicks, Mr D Haunton, Mr D Holberton, Mr A Jardine, Mr N and Mrs W Kingon, Ms V Knapp, Mrs P Maitland Dougall, Mr S Martin, Professor R Mayou, Mr N Merry, Mr A Murray-Jones, Mrs P Nasr, Mr B Preston, Dr P Strangeway.

Gifts in Wills and in memory:

In memory of Mr P Harris.

Charitable Trusts and Statutory Grants:

The H B Allen Charitable Trust, Felix Foundation, Martha David Fund, Mintaka Trust, The Sargent Charitable Trust, RV and RH Simons Charitable Trust, Peter Stormonth Darling Charitable Trust.

We thank all who have supported the appeal, including other Guardians, Patrons and trusts who have chosen to remain anonymous.

Availability & booking

Select a changeover day to start your booking...

What's a changeover day? and Why can't I select other dates?Explain MoreQuestion

A changeover day is a particular day of the week when holidays start and end at our properties. These tend to be on a Friday or a Monday but can sometimes vary. All stays run from one changeover day until another changeover day.