Nope, they're read by Gabrielle Kruger, and according to their website Isis only sells complete and unabridged books.
Look here:
[
www.isis-publishing.co.uk]
To see the what they've got from Jasper.
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"I've often said that the difference between British and American SF TV series is that the British ones have three-dimensional characters and cardboard spaceships, while the Americans do it the other way around."
--Ross Smith