The Tomorrow People
Triumph Thunderbird 1600 Episode: 2.01
"Triumph Motorcycle" according to the police database in the episode:
It's mostly seen only from the rear or from the side with the sidecar. But here's some other shots of it including the one decent shot of the front:
MZ TS250 Episode: 3.03
MZ I believe? I agree probably MZ - I guess from the 1980s?. It is a regular road bike though not a trail bike. Agree with MZ TS 250 regular road bike
Pas TS, avec ec réservoir. ETZ du début des années 80, plutôt..