This London mansion for sale comes with an underground cocktail bar and leisure complex

Never mind the stylish cocktail bar, wine room and a cinema room, the 6,000 square foot basement houses an entire leisure complex, with a heated indoor pool, hot tub, steam room, massage room and sauna...

Since the early 1900s, the leafy hamlet of St. George’s Hill in Weybridge, Surrey, has been the discreet, away-from-the-city haven for the UK's rich and famous. Set on over 900 gated-and-secured acres, the exclusive area has been home to the likes of John Lennon, Ringo Starr, Elton John, Tom Jones and Kate Winslet – it's no wonder that St. George’s Hill is often dubbed the Beverly Hills of Britain.

Now one of this area's mansions has come on to the market, offering a glimpse of what these luxe homes have on offer.

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This St. George’s Hill mansion is one of the grandest and priciest properties yet. The newly-completed 14,300-square-foot, red brick, Georgian-style spread is on the market for £14.5 million. The interiors were designed by design studio Alexander James Interiors.

The luxurious property has six bedroom suites with their own dressing room, plus a bar, wine room and a cinema room – but its most spectacular feature has to be its huge, 6,000 square foot lower ground floor housing an extensive leisure complex.

The property is called Grosvenor House, aptly named after the iconic five-star hotel in London’s Mayfair; Take the lift down to the basement and you’ll find the kind of facilities you’d expect at the plush Grosvenor House hotel.

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The downstairs spa includes a state-of-the-art gym, 39-foot-long pool, hot tub, steam room, massage room and sauna.

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Doors from the pool area open out on to a huge, indoor-outdoor deck that’s perfect for parties.

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Also on this floor is a cinema room, a large lounge and curved cocktail bar that's perfect for entertaining.

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Behind the cocktail bar is a sleek, semi-circular walk-in wine room.

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This lower ground floor also houses akitchen, self-contained staff suite and a garage big enough for five cars.

And then there’s the rest of the house. The first floor features an elegant drawing room with doors leading out to manicured lawns. French doors open onto a wraparound terrace.

There's also an equally elegant dining room, plus a light-filled office and adjoining library.

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A sleek, eat-in kitchen features a huge kitchen island with breakfast bar at one end, as well as a separate dining area.

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A wrought-iron staircase leads up to the bedroom floor with five ensuite bedrooms, as well as a generous master bedroom with a huge ensuite and dressing room. There's also a balcony with views out to the garden.

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Mature shrubs, trees, beds and borders wrap around the lawned gardens that surround the house. A generous patio area runs along the back of the house, offering ample space to entertain.

Grosvenor House is on the market for £14.5million with Savills.

Lotte Brouwer

Lotte is the Digital Editor for Livingetc, and has been with the website since its launch. She has a background in online journalism and writing for SEO, with previous editor roles at Good Living, Good Housekeeping, Country & Townhouse, and BBC Good Food among others, as well as her own successful interiors blog. When she's not busy writing or tracking analytics, she's doing up houses, two of which have features in interior design magazines. She's just finished doing up her house in Wimbledon, and is eyeing up Bath for her next project.