Lindsey Davis's The Iron Hand of Mars is our book for 12 December this year. BBC Radio is going to broadcast a dramatisation of it over six weeks starting on 6 April from 11:30 a.m to 12 noon (presumably BST (GMT +1). More details here (scroll down).
The BBC Radio website also still has available an interview with Lindsey Davis which was broadcast on 20 February 2007.