Mark was a guest at the event which celebrated 40 years of the Doctor Who Appreciation Society.
He appeared on stage with Nicola Bryant for a "Planet of Fire" reunion that dished the dirt on Lanzarote!
Thanks to the DWAS and guests for a great day, photographs from the event have been posted up here.
Mark came to the Sheffield "Valiant" event on Saturday 5th March.
His stage panel, with Jim Findley from "Resurrection of the Daleks" covered his experiences as a natural history producer, with advice on surviving attacks by crocodiles, elephants and polar bears!
He had spent the last few days filming at a truckstop for a reality TV programme but still spent hours signing autographs and meeting fans of the show. Photographs here
Dunedin March 2014
Who at Hilbre 28/06/14
Fans Like Us event organised by the Wirral Doctor Who group.
Also with Colin Baker, Terry Molloy, Colin Spaull, Bernard Holley and many more.