So? I've lived in London for decades. I was evacuated from the Underground when the 7/7 bombings happened. Yes, there is CCTV all over the place, but do you think the authorities are sitting there viewing it and waiting for someone to drop some litter so they can send the police round to give us an on-the-spot fine? No.
They use the CCTV footage when a crime has been committed (for example to track a suspect's movements), or to provide real-time security and prevent a crime at an event (such as the state visit of a fat, demented, cankles-ridden buffoon).
London buses have multiple cameras on them, for the protection of the driver and passengers. Would you rather we get rid of them so we can't figure out who attacked a woman on the top deck, and can't find out where they ran off to? Cameras like that, and the footage from them, is used after the fact to help in solving crimes, not to actively surveil us.
In my decades of living in the UK, I have never been actively surveilled or tracked because I'm not a criminal.