The best historic houses have a story to tell; Trent Park House of Secrets has two cracking ones.
This country house in Enfield, North London, hosted royalty and film stars during the 1930s, and spent the war years secretly recording German generals through microphones dotted around its rooms. I went to see how its museum tells both of those stories under one roof.
If you are working through a list of London historic houses, this one deserves a place near the top. It only opened its doors in July 2026, so it has not been written about to death yet, and that is exactly why I wanted to walk you through what to expect before you book.
Quick Facts Before You Go
- Address: Daffodil Crescent, Enfield, London, EN4 0PS
- Opening hours: Tuesday to Sunday, 10 am to 5 pm (closed Mondays)
- Adult ticket: £14 (students and children aged 5 to 17: £12, under 5s free). Family discounts available.
- Nearest stations: Oakwood or Cockfosters, both on the Piccadilly line
- Time needed: Two hours, longer if you want to walk in the park afterwards
A Brief History of Trent Park House
In 1779, George III granted his physician, Sir Richard Jebb, a 99-year lease on 250 acres of his Enfield estate. This was as thanks for saving the life of his brother, the Duke of Gloucester, in the Italian town of Trento. Jebb named the property Trent in memory of it.
The first house went up in the 1780s, and it was rebuilt again in the Victorian style in the 1890s after passing through a few different owners.
But none of that history is why anyone visits today. The house we see is largely the work of one man, and this is his story.
Ground Floor: The World of Philip Sassoon
Sir Philip Sassoon bought the freehold to Trent Park in 1923 and immediately set about ripping out the Victorian house that came with it. He rebuilt it in a Georgian country-house style, and turned it into one of the most fashionable weekend addresses in England.
He could afford to. Sassoon came from the Sassoon banking family, sat as the Conservative MP for Hythe from 1912, worked as Parliamentary Private Secretary to Lloyd George, and later served as Under-Secretary of State for Air.
The guest list reads like a fever dream of the interwar years. Winston Churchill came. So did the future Edward VIII. George Bernard Shaw and T. E. Lawrence turned up too, along with Charlie Chaplin and Fred Astaire, whenever they were in the country.
Sassoon collected art the way other people collect stamps, and the ground floor has several pieces back in the rooms for which they were painted, including portraits of Sassoon and his sister Sybil, which have not hung there since 1939.
Sassoon died from a severe chest infection in June 1939, only a few months before the war he had spent years warning about broke out. The government requisitioned the house almost immediately, and the story changes from that point.
Basement: The Role of the House in WWII
This is the part most people come for, and it is the part that stayed with me longest.
Between 1939 and the end of the war, Trent Park became a holding site for German prisoners of war, but not the sort held behind barbed wire.
Fifty-nine senior officers, including a run of German generals, were housed here in considerable comfort. They had decent food and reasonable freedom of movement within the grounds, and no obvious sign they were being watched.
That was the whole point. British intelligence had hidden microphones in the walls, the light fittings, the furniture and even the benches outside, and the prisoners talked.
Some of them had been warned they might be overheard. They talked anyway.
Below the state rooms, in what is now the museum’s basement, teams of Secret Listeners worked in shifts to record and translate every word. Many of them were German-speaking Jewish refugees who had fled the regime they were now listening in on.
The intelligence gathered fed directly into Allied strategy and reportedly helped delay Germany’s deployment of the V2 rocket. Historians now rank the site alongside Bletchley Park in terms of importance. I think it lives up to that claim.
The recreated space gives a real sense of what that would have been like. The ceilings are low and the whole floor has a slightly damp, functional feel, a sharp contrast to the polished upstairs.
There is a recreated bomb shelter and a food rationing display. Old cinefilm projectors are set up with their original clatter and hiss, so you hear the films rather than watch them play in silence. Take a seat at one of the stations and choose a conversation to listen in on.
How to Get to Trent Park House of Secrets
The museum is in Enfield, at the edge of Trent Country Park. Take the Piccadilly Line to either Cockfosters or Oakwood. It’s a 20-minute walk from either station.
From Cockfosters, you walk through the park itself, which is a pleasant way to arrive if the weather is on your side. I imagine it gets pretty muddy in winter though.
It’s a paved road from Oakwood, or there’s a free shuttle bus running to and from the museum if you’d rather save your legs for the house. Find out how to book it here.
One thing worth checking before you travel: the Piccadilly Line is at the far end of the network and occasionally closes sections for engineering works, so check TfL’s site the day before, particularly at weekends.
If you are driving, there’s only Blue Badge parking directly at the museum, which needs to be pre-booked. Everyone else needs to use the free car park at Trent Country Park’s Cockfosters Road entrance (15-minute walk). There’s also paid parking at Oakwood Underground Station.
Opening Hours, Tickets and How Long to Spend There
The museum opens Tuesday to Sunday, 10 am to 5 pm, and is closed on Mondays. It will be closed for conservation and maintenance in January 2027, reopening in February.
You can book tickets online up to six weeks ahead, and this is a sensible option at weekends and during school holidays. I didn’t book ahead for a weekday visit and was admitted straight away; the museum cannot guarantee walk-in entry at busy periods.
Prices at the time of writing:
- Adults: £14
- Students: £12
- Children (5 to 17): £12
- Children under 5: free
An Art Fund National Pass gives you a 50% reduction, but you can’t use it when booking online.
Budget around two hours for the house itself. That covers both floors at a reasonable pace, plus time to read the labels rather than skim them.
If you are interested in the wider grounds, Trent Country Park runs to 413 acres, and it is easy to turn the visit into most of a day by adding a walk once you come out. My local favourite Pymmes Brook Trail isn’t far from here and is also a great add-on.
Practical Tips Before You Visit
- Book your ticket in advance, particularly for weekends.
- The museum is staffed by knowledgeable volunteer guides. Make good use of them.
- Wear sturdy shoes if you plan to combine the museum with a walk in the park, since paths can get muddy.
- The basement has low ceilings and narrow spaces in places, so it may not suit everyone with mobility needs. Check the accessibility page on the museum’s own site before you go if this affects your visit.
- There’s an excellent café – I recommend its lemon drizzle cake – and this is open to everyone, whether or not you have a museum ticket.
- There is a free learning programme for schools, and the museum might be busier with school groups on weekday mornings during term time.
Other London Historic Houses Worth Adding to Your List
Trent Park House of Secrets pairs well with London’s other historic houses, particularly if you want a day that mixes grand architecture with a story you may not have heard before. Strawberry Hill House, Apsley House and Marble Hill House all make good companions to Trent Park House if you are building a London-wide trip around the city’s country houses.
Final Thoughts
Trent Park House of Secrets does something I don’t see often, which is to tell two completely different stories in the same building without either feeling like padding.
The ground floor gives you the glamour and the guest list. The basement gives you low ceilings, listening stations and a story about ordinary refugees doing extraordinary intelligence work that nobody told for 70 years.
If you have any interest in WWII history, interwar high society, or just want to see a recently opened London museum, this one belongs on your list.
About Bridget
Bridget Coleman has been a passionate traveller for more than 30 years. She has visited 70+ countries, most as a solo traveller.
Articles on this site reflect her first-hand experiences.
To get in touch, email her at hello@theflashpacker.net or follow her on social media.