How the de Gournay dynasty decorate: Hannah Cecil Gurney's London flat

Hannah Cecil Gurney's west London flat is a feast of luxurious colour, texture and pattern - little surprise given that her father founded the handmade wallpaper company de Gournay.

Lining the kitchen walls with gold leaf and painting the woodwork turquoise has made the tiny cooking space feel like the inside of a delicious chocolate box. The wenge worktop was chosen to be 'more cosy and warm than stone', says Hannah. It is neat and chic, and the perfect size for Hannah, who would happily survive on 'popcorn and Champagne'. Luckily, Eddie is a great cook, and the one in charge at dinner parties. 'It's probably why I married him,' she says jokingly.

Beyond this are the bathroom and two bedrooms. The clear division between living and sleeping spaces, as well as the use of slimline furniture in tight spaces, lends the flat room to breathe. 'We can easily entertain in the sitting room and kitchen without anyone needing to know where the bedrooms are,' Hannah says.

Certainly the flat has proved to be a perfect testing ground for de Gournay's hand-painted wallpapers and Hannah, who oversees global marketing and development, is more than happy to bring work home. 'Silk wallpapers feel softer, richer and more textural, and they're better for acoustics,' says Hannah. 'Painted walls feel much colder as it becomes part of the architecture, not the decoration.' Traditional roses and urns cover the walls of the spare bedroom, while there are gilded lucky fish in the bathroom. 'The joy is that I can take it with me if I move; it just peels right off in full pieces.'

In the main bedroom, the cosseting warmth of de Gournay's antiqued 'Badminton' wallpaper provides 'a cocoon of birds and butterflies that makes me so happy', says Hannah. Its rich depth and texture owe much to a new technique inspired by the 'happy accident' of a client. The Californian fashion designer Erica Tanov left a similar de Gournay silver-gilded paper tucked away in a damp, dark attic for over 10 years. 'The silver tarnished even more dramatically than it was designed to,' explains Hannah. The same ageing effect has been applied here, but without all that wait.

It is impossible to take in every element at once. 'Not one machine goes near anything we do at de Gournay,' she says. 'It's what gives our designs soul and meaning.' Reflecting this approach, Hannah has created a home that feels personal to her. 'I love that there's always something new to look at, always new things to find,' she says.

de Gournay: degournay.com Tara Craig: tcraig.co.uk