Stephen Baxter

Stephen Baxter (born 13th November 1957) was a prolific writer of hard science fiction novels featuring extremely large and thought-provoking concepts.

He wrote the short story Poyekhali 3201, published as part of Decalog 5: Wonders from Virgin Books. This story has no links to the Doctor Who universe.

In February 2007 Doctor Who Magazine mentioned that Baxter was slated to write the 100th release in the main line of Big Finish Doctor Who audio stores called Earthstorm, but the script did not meet Big Finish's expectations and was cancelled. 

SFX similarly reports that Baxter is writing a novel for BBC Books starring the Second Doctor, possibly as part of a revived book series in 2012.