Forty: Volume 1

 was a full cast audio anthology released in April 2022 by Big Finish Productions. It featured Peter Davison as the Fifth Doctor, Matthew Waterhouse as Adric, Sarah Sutton as Nyssa and Janet Fielding as Tegan Jovanka. This and the subsequent release Forty: Volume 2 acted as a celebration of forty years since the Fifth Doctor's first regular appearance.

Secrets of Telos also acted as a sequel to The Tomb of the Cybermen.

Publisher's summary
1. Secrets of Telos by Matt Fitton

2. God of War by Sarah Grochala