Mark played Consultant Radiologist Dr Alan Statham throughout the two series of Green Wing and the one-off special concluding episode.

Set in the fictional East Hampton Hospital Trust, Green Wing weaves a narrative out of a series of surreal sketches using a regular set of characters and a fixed location. It was created by the team behind the earlier Channel 4 sketch show Smack the Pony.

Bordering on insanity, Alan Statham is a pompous, repressed, permanently stuttering man desperately in love with head of human resources, Joanna Clore (Pippa Haywood). The open secret of their relationship is frequently held against him by Boyce (Oliver Chris), one of his student doctors.