Mass surveillance and living in a police state is an ingrained part of British culture.
It is no wonder to me that police procedurals are the most popular genre of TV shows in UK by quite a margin. They really are high-quality, but it does really feel like thinly-veiled propaganda (often commissioned by the BBC) portraying the State and police as the good guys in their endless quest against the baddies. Thank god there are CCTVs at every corner keeping the peace!