u/Enough-Coyote4049

I work in a large security control room in England,

I got into work tonight and my manager presented me with still images of me working.

He states that a complaint came in a few days ago for how I handled an alarm (it was picked up "late" due to the computer freezing then crashing)

Is this unlawful use of my data?

I don't think there is anything in my contract regarding CCTV being used for performance ect