Christopher H. Bidmead has 3 audiobooks on Listento.it, narrated by 4 narrators. The most-rated is Doctor Who: Logopolis.

Peter Davison reads the first gripping adventure for the Fifth Doctor.
Still weak and confused after his fourth regeneration, the Doctor retreats to Castrovalva to recuperate. But Castrovalva is not the haven of peace and tranquillity the Doctor and his companions are seeking. Far from being able to rest quietly, the unsuspecting time-travellers are caught up once again in the evil machinations of the Master. Only an act of supreme self-sacrifice will enable them to escape the maniacal lunacy of the renegade Time Lord.
Peter Davison reads Christopher H. Bidmead’s complete and unabridged novelisation, first published by Target Books in 1983.
©1983 Christopher H. Bidmead (P)2010 BBC Audiobooks Ltd

The Lost Stories: adventures that were originally written for the Doctor Who television series but never made. Now available to hear for the first time.... The Doctor and Peri have been on holiday, visiting old friend Reverend Foxwell in the sleepy English village of Hollowdean. But why are their memories so hazy? Piecing together events, they recall a mysterious chauffeur who is not what he seems and Foxwell's experiments that could alter the nature of reality. Huge sand creatures have been sighted on the dunes, and many of the locals are devoted to a leader known as 'Professor Stream'. But who is Stream? And what lies within the Hollows of Time? The Doctor will discover that not every question has a definitive answer.... Written by Christopher H. Bidmead. Directed by John Ainsworth.
©2010 Big Finish Productions (P)2010 Big Finish Productions

An unabridged reading of the final adventure for the 4th Doctor, novelised by Christopher H. Bidmead from his original TV scripts.
The meddling presence on Earth of the Doctor's arch enemy, the Master, ensures the disruption of normality. Even he is horrified by the threat of total chaos he unintentially precipitates - until he finds a way to turn the imminent destruction of the universe to his own advantage. But the cost for the Doctor himself is terrible.
©1982 Christopher H. Bidmead (P)2010 BBC Audiobooks Ltd