Boucher was the script editor for Terry Nation's Blake's 7 for all four series, after being recommended by Doctor Who's Robert Holmes, and wrote multiple episodes himself, including the famous finale.
- "Star One"
- "City at the Edge of the World"
- "Rumours of Death"
He also wrote four Past Doctor Adventures, all of which feature Leela and the Fourth Doctor, and the ongoing "Kaldor City" audio dramas set in the decadent far-future human society depicted in "The Robots Of Death".
Tropes in his work include:
- Canon Welding: His Fourth Doctor Past Doctor Adventure "Corpse Marker", and the "Kaldor City" audios, feature characters from both his Doctor Who and Blake's 7 work. "Kaldor City" also features the Fendahl as the Big Bad and a character who might be (read: definitely bloody is!) Avon in a new identity.
- Darker and Edgier, Bloodier and Gorier: In keeping with the era of Doctor Who he was writing for. Blake's 7 was then Darker and Edgier again.