A 103-acre equestrian estate described as combining country living with a London postcode is on the market - but you'll need at least £20m.

Highwood Lodge Farm Estate, in Mill Hill, boasts 103 acres of land including equestrian facilities and a manor believed to have been built around 1900.

The Gothic-style house, which sits at the end of an impressive avenue of lime trees, boasts five reception rooms, a principal bedroom suite and six bedrooms.

The online description reads: "Highwood Lodge Farm Estate is an exceptional residential, amenity, and equestrian estate remarkably positioned just nine miles north of Central London.

"This estate offers the unique combination of country living within a London postcode. It features a superb unlisted manor house interior designed as a country house, surrounded by formal gardens and accessed through a private tree-lined drive."

There are four car garages with a flat above, a pool house with indoor pool and solar panels.

The estate also boasts five cottages and flats, a tennis court and a garden pond.

Ham & High: Holly Lodge Farm Estate has five reception rooms and six bedroomsHolly Lodge Farm Estate has five reception rooms and six bedrooms (Image: Tim Vooght)

Highwood Lodge Farm Estate, which is nine miles from central London, began its transformation into a substantial estate in the mid-1600s.

Past inhabitants include actress Mary Ann Porter, philanthropist William Brodie Gurney, Major General George MacDonogh and Sir Frederick Aked Sellers, a former Lord Justice of Appeal and Privy Councillor.

Current owner Andrew Reid, London’s only racehorse trainer, has lived at the estate with his family since 1995 and has undertaken vast improvements during his ownership.

Ham & High: Holly Lodge Farm Estate boasts a tennis court and indoor pool within its 103 acres of landHolly Lodge Farm Estate boasts a tennis court and indoor pool within its 103 acres of land (Image: Tim Vooght)

He remodelled the house, formal gardens and indoor swimming pool, and also developed the estate’s extensive equestrian facilities.

The estate now includes 14 loose boxes, accommodation for grooms, a horse-walker, six furlong gallops, a polo field, and an Olympic-size outdoor arena suitable for dressage, show jumping, and polo.

The estate also features a cross-country course designed by Captain Mark Phillips, and horse trials held at the venue previously attracted a crowd of more than 10,000 people.

Ham & High: Stables at Holly Lodge Farm Estate Stables at Holly Lodge Farm Estate (Image: Tim Vooght)

The facilities have been a highly successful racehorse training yard where Reid trained 179 winners, including All Weather Derby winner Eccentric and winners of races on Derby Day and Oaks Day.

Reid has has also planted more than 6,000 trees, and established one and a half miles of hedgerow - all aimed at supporting the estate’s natural biodiversity and ecosystem.

The manor is being marketed by Savills.

Ham & High: The magnificent garden at Holly Lodge Farm Estate The magnificent garden at Holly Lodge Farm Estate (Image: Tim Vooght)

Reid said: “I hope Savills find a purchaser who appreciates the opportunities Highwood Lodge Farm Estate offers and who will cherish and continue to improve the farm estate, as I have, throughout the years of my ownership.”

Crispin Holborow, joint head of The Private Office at Savills, said: “An equestrian estate of this calibre and size in such close proximity to Central London is highly unusual.

"One of the key selling points for me is the combination of the country house setting with the excellent transport links into central London.”