Sheridan has scored some of UK television's most prestigious drama series such as Spooks, Silent Witness, and Sea Of Souls, and most memorable documentaries, such as Wonders of the Solar System, BAFTA winner Wounded (both for the BBC), the lavish natural history series Atlas 4D and Stephen Hawking's Universe, (both for Discovery).

A BAFTA nominated TV & Film Music Composer, Sheridan also has wide experience working in advertising, having written music to accompany global campaigns for a number of major clients including Nissan, Coca Cola and LG, and has also worked as a remixer and orchestral arranger for pop artists such as Erykah Badu, Blur, and Robert Plant.

Composer of music for both Wonders of the Solar System and the follow-up series Wonders Of The Universe, Sheridan also scored the first series of DCI Banks for Left Bank Pictures/ITV .  

Sheridan is currently writing for the next series of Silent Witness and another science series fronted by Stephen Hawking for Discovery.