The charming Kensington townhouse of dolls' house creator Lucy Clayton, decorated by Ben Pentreath

Lucy Clayton and interior designer Ben Pentreath played with colour and whimsical details to bring comfort and joy to her London townhouse

Here, Ben explains, that meant accepting the things they could not change, operating with what he calls a Cecil Beaton quality, in which you ‘decorate, rather than build yourself out of any problem; that is precisely what we did here… hitting the rooms with colour and pattern’, he says. Elsewhere, he and his team (Will Creech on architecture and Tamara Lancaster on decoration) carried out ‘forensic surgery’ where they could. By now, Lucy and Kit had been joined by Lucy’s partner, the education policy advisor Steven Haines, and their daughter, Bunny, now five, so practicality was a priority. With that in mind, Ben’s team conjured a bedroom for teenage Kit in the attic, a basement playroom for Bunny and generous cupboard space for Lucy, whose fashion background and appetite for beauty has predictable consequences.

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Vintage pink upholstery and cushions in ermine ‘Folies Bergère’ linen by Howe at 36 Bourne Street stand out against a Scumble Goosie ‘Stockholm’ sofa in Papers and Paints’ zingy ‘5063’, also on the walls and woodwork. The ottoman is in ‘Pome Linen’ in moss by Ceraudo

Rachel Whiting

Doll’s houses, Lucy observes, never have utility rooms (or, for that matter, loos) – ‘Why would they?’ In real life, however, the argument for their addition is compelling. Dismayed that the perpetually running washing machine of a young family was in the old coal hole outside, Ben carved up the kitchen to create a laundry. Lucy’s gratitude remains palpable. ‘Rooms like this are the keys that unlock a house,’ she says.

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Rachel Whiting

Such auxiliary details offer a refreshing dose of reality, but fantasy is at the forefront here, recognisable in the hand-painted wallpapers, lacquered walls, prudent fabric frills and perfectly designed furniture. A self-deprecating Lucy is quick to stress, however, that the stuff of life is not absent, just hidden. ‘Flip that cushion over,’ she says, pointing to the Howe sofa upholstered in Madeleine Castaing’s ‘Castiglione’ stripe, ‘and you’ll find a spectacular sea of blue ink on the other side’ – for which she has a thieving puppy and a ballpoint pen to thank. Though it took a while to recover from, the incident was a good reminder that, sometimes, you just have to relax.

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Prints by Hormazd Narielwalla are seen in a mid-century mirror from Streett Marburg beside Fiona McDonald’s amethyst ‘Luca’ wall light. A brass and marble table by David Turner Workshop is teamed with antique dining chairs bought at auction

Rachel Whiting

Put simply, perfection cannot exist without pragmatism. And just as Lucy – a precisionist – knows how easily the rainbow rubble of Lego can ruin a colour scheme, she also understands how important it is for children to inhabit their homes as properly as adults. ‘What I wanted, above all, was a spirited house, one that inspired wonder in us all. Ben gave me that.’

That yearning for wonder explains Lucy’s preoccupation with doll’s houses: sacrosanct spaces unblemished by reality. The first she made, which kickstarted her company, was for Bunny. ‘I lost my mind over it!’ she says. ‘And now, poor Bunny, it’s too perfect to play with.’ Consequently, Lucy is working currently on a new miniature world for her daughter: ‘I must try not to be too precious about it. If she wants to tuck a tiny baguette into bed, well… I’ll just have to be fine with it.’

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The bold chinoiserie pattern of the Scalamandré ‘Baldwin Bamboo’ wallpaper in cream & blue on lettuce and the striking white ‘Stripe’ linen tablecloth by Summerill & Bishop provide a quirky contrast with the classic Sheraton table and chairs.

Rachel Whiting

Reflecting on that first doll’s house, which she wrote about for the House & Garden website, Lucy recalls many comments from those wishing not that their house looked like that, but that they could shrink and live in it. It proves how much we all desire a world built around delight. ‘It seems trite,’ she says, ‘but it’s why Christmas is so magical.’ This is her favourite time  ‘because there is no need to apologise for beauty or playfulness’. It’s no surprise that it was Christmas every day in her childhood doll’s house. Now she’ll settle for stars on the door.

The Kensington Dollshouse Company: kensingtondollshousecompany.co.uk | Ben Pentreath: benpentreath.com