None currently. The last one was "Blake's 7 Afterlife" by Tony Atwood. I also read the novelization of the episode "Avalon".
Afterlife could easily be the show's fifth season. If you saw the program itself you know the last frame was Kerr Avon raising a stolen pirates' rifle towards the camera. Afterlife picks up shortly thereafter and contains several distinct sections.
Avalon has some differences. In the book Cally and Jenna are in opposite roles: Jenna stays on the ship while Cally goes down for the meeting. This makes more sense from a continuity standpoint but was changed to focus more on Jenna's recon skills than her piloting. Also in the book the female mutoid played by Glynis Barber is male instead.
Next up I'm probably gonna dig into the Voyager novels or maybe Escape From Tenopia and Escape From the Kingdom of Frome, two of my favorite gamebook series.