Where are you now and what can you see?
I'm on a tea break from filming at 18th-century Marble Hill House in Twickenham - with half an eye I'm looking at the portrait of George II that we're going to shoot next.
What are you currently reading?
Linda Colley on Britons, Andrew Thompson on George II - for this new TV series about the Georgians.
Choose a favourite author and say why you admire her/him
I admire Mark Girouard. Reading his books made me want to become an architectural historian in the first place. He opens up such esoteric subjects in such beautiful prose.
Describe the room where you usually write
It's a noisy metal box on wheels. I'm pretty disciplined about getting my laptop out and my head down during my 35-minute commute.
Which fictional character most resembles you?
I'd like to say Lucy in The Lion, The Witch and the Wardrobe. But to be honest she's kinder, and more generous than I am.
Who is your hero/heroine from outside literature?
Connie, the ex-WAAF, 90-year-old volunteer pianist who plays for the visitors to the SS Great Britain in Bristol. I'd like to be like her when I grow up.
Lucy Worsley's 'A Very British Murder' is published by BBC Books