BBV has been quite active with new Doctor Who material and in this case it is a novel of Republica - one of their famous audio adventures which were performed by Sylvester McCoy and Sophie Aldred. The new novel by Micha K Spurling based on the story by Mark Gatiss is now out and can be ordered here;
https://bbvproductions.co.uk/products/Republica-Novelisation-BOOK-p373068692
Rebecca
Outpost Gallifrey News
Spain
https://bbvproductions.co.uk/products/Republica-Novelisation-BOOK-p373068692
Rebecca
Outpost Gallifrey News
Spain