From the archive: inside Bowood, the epitome of an 18th-century English country house (2016)

With its Robert Adam interiors and Capability Brown landscape, Bowood is the epitome of an eighteenth-century English country house, formed by the taste and vision of previous inhabitants and now adapting gently to the needs of the twenty-first century

Today, the house is in a charming figure-of-eight combination of the Adam wing running the length of the terraces and the restored service areas, incorporating two courtyards separated by the chapel. Charlie opened the grounds and the Adam wing to the public in 1975, converting derelict stables into a sculpture gallery, restaurant, shop and exhibition space. Paintings and memorabilia relating to his forebears - many of whom served in high office (the 5th Marquess as Viceroy of India, Secretary of State for War and later Foreign Secretary) - are on permanent display here.

In 1987, Fiona undertook the task of redecorating much of the house. Having trained at Colefax and Fowler, she brought with her the influence of its quintessential English country-house style. It was an enhancing synergy with John Fowler's legacy, since he had worked on a few rooms for Charlie's mother Barbara in the Fifties. Fiona later set up her own interior design company, under the name Fiona Shelburne - another of her husband's family names - and has since added a more modern style of decoration to her repertoire.

The hall, with its cantilevered staircase, was converted from a dining room in the Fifties, under the direction of John Fowler.

Simon Upton

As you enter the private wing through a wisteria-clad courtyard, you step into a graceful square hall that is brimming with bougainvillea and scented geraniums. Once a small dining room, it was converted into a hall in the Fifties, when the elegant cantilevered stone stair-case was added and when Fowler introduced two of the columns he often used to give structure to a space.

He also decorated the drawing room, which remains pretty much intact, apart from some inspired touches of Fiona's. The cotton cream damask on the walls, the curtains and the pelmets are his, the braiding on the pelmets reflecting the honeysuckle design in the cornice. As a homage to Fowler, Fiona added a trefoil stool - one of his signature pieces that he had not introduced at Bowood - in front of the chimneypiece. A set of eighteenth-century English chairs needed re-covering and, while browsing at Tissus d'Hélène, Fiona stumbled upon a sample piece of Fortuny-like cotton damask. She fell in love with it, so Tissus d'Hélène put it in production and named it the 'Shelburne Damask'. One of these re-covered chairs now sits in front of the French desk in the window of the drawing room. It is one of many pieces of French furniture inherited by the family.

John Fowler's decoration of the drawing room remains almost unaltered, including the cream cotton damask used for the curtains and pelmets and to cover the walls; the desk by the window came into the family during the French Revolution through Emily Mercer, daughter of the Comte de Flahault, who married the 4th Marquess.

Simon Upton

The sitting room that is used on a daily basis glows, particularly at night, thanks to its soft terracotta-hued Cole & Son wallpaper, specially printed from its archive collection. Opposite is the dining room, once a flower room, office and loo, which is painted a bracing tomato soup colour - 'so good behind family portraits, as nearly all of them have a highlight of red somewhere', as Fiona points out. This room leads out to Lady Lansdowne's Garden, which is adjacent to the Glass Hall, where the family eat in high summer surrounded by troughs of geraniums, fuchsias and abutilons, the table always dressed with Fiona's favourite scented roses.

The public rooms run along the whole length of the terraces, a succession of elegant, homogeneous spaces that are also used by the family in the winter months. At Christmas, the tree traditionally stands in the corner of the Robert Adam library under the coffered ceiling, embellished with grisaille medallions and set off by Wedgwood vases. Beyond is what Fiona describes as the 'Buckram red' orangery, which is now a picture gallery where Fiona and Charlie occasionally host dinners; its doors are the original Adam ones, taken from the big house that was pulled down.

The John Fowler-designed drawing room with walls lined in cotton cream damask - the trefoil stool is an addition by Fiona.

Simon Upton

Upstairs, Fiona really came into her own. The bedrooms and bathrooms are all decorated by her, with an emphasis on comfort, quality and understated elegance. She has used floral chintz on the walls and curtains (one even named 'Bowood' by Colefax and Fowler) with traditional serpentine and swagged pelmets.

The Bowood estate today is a vibrant, thriving enterprise, with annual garden festivals, dog shows, Christmas extravaganzas and fairs, weddings, and seminars in the conference hall; it also has one of the country's most popular adventure playgrounds. But family life runs in parallel to all this: children and grandchildren constantly drop in, often bringing their dogs. With Fiona and Charlie as custodians, Bowood manages to retain an intimate informality while keeping alive its history - that of a noble and distinguished family.