An interior designer's Hampstead Heath mansion flat, filled with a lifetime's collection of art

This north London mansion flat provided the ideal fresh start for designer Virginia White, who wanted a new home with fewer superfluous rooms but enough wall space to display her extensive art collection.

If simplicity is what drew the couple to the flat, then simplicity, or at least a feeling of calm continuity, is what Virginia has brought to the decoration. This is a hallmark of her work and her taste, which has been honed over the course of an interesting life. The daughter of a German Classical archaeologist, she grew up in a world of museums and art collections. After studying art history, she worked in the antiquities department of Sotheby's and at the Peggy Guggenheim Collection in Venice. Later, having studied interior design at Chelsea College of Arts, she started a second career under John Stefanidis, before launching her own interior design studio, and eventually her own furniture and fabric lines. Virginia says one of her formative influences has been Kettle's Yard, the home and now museum set up by Jim and Helen Ede in Cambridge, and she has long been a collector in the same vein.

Image may contain Indoors Interior Design Lamp Chair Furniture Cup Home Decor Rug Table Plate Art and Painting

The opening from the sitting room, lined in Carrara marble, reveals Howard Hodgkin's etching and aquatint Venice, Evening above an Aram unit. On its surface is Porta Romana's 'Gourd' lamp alongside a Sidney Nolan sketch, a John de Pauley sculpture, a Delft plate and an architect's model. The Kaare Klint chair is on a rug by Sigvard Bernadotte.

Christopher Horwood

Just like Kettle's Yard, this flat is characterised by a remarkable collection of pieces set against a graceful backdrop. 'I've got so much going on in terms of books and art and knick-knacks, so I need the rest of the decoration to be calm, classic and simple,' she observes. ‘And something that is not going to go out of fashion.’

Virginia is evangelical about using the same curtains and blinds throughout, especially in a lateral layout like this, where there are open sightlines between rooms. The elegant cream curtains in 'Pieris' linen from Etro Home Textile are a signature: 'I've used them for most of my clients for at least 20 years, but they stand the test of time'. So too are the roller blinds from Sunnex, made up in an old olive green Holland cloth supplied by Virginia's friend Marianna Kennedy. 'I find Roman blinds quite heavy and dressy sometimes, whereas these are very simple and connect the room to the trees outside,' she explains. Most of the walls are painted in a Dulux shade called ‘Timeless’. 'It's good when you're going for a contemporary mood. It lacks the grubbiness of more historic shades - it is very fresh, but still has a bit of warmth. And it also works brilliantly with all the pictures - the displaying of art is just as important as the artwork itself,' she adds.

Image may contain Indoors Interior Design Corner Floor Chair Furniture Desk Table Flooring Home Decor and Art

Marcel Breuer's 'Cesca' chairs, with seat pads covered in Virginia's 'Robins Egg' fabric and a cushion from Town House Spitalfields, artwork by Fred Dubery and Howard Hodgkin (a Barry Cook can be seen in the hall), and ceramics by Seth and Michael Cardew and Leach Pottery bring a contemporary feel to the kitchen design, which was inspired by classic Dutch interiors.

Christopher Horwood

The serene quality of the flat certainly lends itself to display. Above a sofa in the sitting room, she points out a rare surviving landscape painting by Maria Caspar-Filser, an early-20th-century German painter whose works were considered degenerate by the Nazis and were mostly destroyed. A Bridget Riley black-and-white Perspex print from 1965, a monochrome William Scott painting and a mid-century work in steel by Achim Pahle hang on either side of the Jamb chimneypiece.

Together, these reflect Virginia's own history. The Caspar-Filser landscape was her grandfather's and depicts the Bavarian countryside near his summerhouse, and the steel piece was inherited from her father and came from the period that he spent creating a museum of modern art at Ruhr University Bochum in North Rhine-Westphalia in the 1960s. The William Scott was one of her earliest and luckiest acquisitions in her twenties, while the Bridget Riley is her most recent purchase. For such a disparate collection of things, they all get along remarkably well together. 'You wouldn't think an Expressionist painting would hang well with the black-and-white Perspex picture but, to me, they're just made for each other. It's thanks to the white walls, the generous ceiling height and the abundance of space.'

The flat is the perfect backdrop to these extraordinary things, but it also facilitates a peaceful, well-designed life for Virginia and her family. Isn't that what we should all aspire to in our homes?

virginiawhitecollection.com