Second paragraph of third chapter:

However bothersome Nanny’s antics were, they were easy to rationalise. Explaining why a blue box had suddenly appeared from the ether was beyond his patience.

Bali Rai is new to the Whoniverse, but an established YA writer from Leicester. This book is one of a sequence bringing the Doctor into classic children’s novels and seeing what heppens, in this case the Eleventh Doctor and Clara dropping into the world of Robert Louis Stevenson’s Treasure Island, where they are joined by River Song and the Paternoster Gang. There’s some admirable unpacking of the slave economy behind the Caribbean trade of the eighteenth century, and we get Jim gender-flipped to Janey, and escaped slaves setting up a free community on the island, but the story is a bit lacking in actual plot (and poor Clara is sidelined for much of it). The Paternoster Gang get some good lines though. You can get Rebellion on Treasure Island here.

This was my top unread book by a writer of colour. Next on that pile is The Order of the New Moon Reflected in Water, by Zen Cho.