I know it is not CCTV, but still an interesting story about, perhaps, UK’s first spy pictures ever. A couple of years ago, the National Archives uncovered how the police spied on the suffragettes. You can read about this here: Dominic Casciani, “Spy pictures of suffragettes revealed,” BBC News Online, 3 Oct. 2003.
How to Be a Retronaut have just posted a whole section of these photos that were used by police officers to identify suspects. Now, it seems to be a gallery of pride in the fight for women’s rights.
[Unfortunately, I cannot give full credit to the photographers. However, due to crown copyright regulations, the photo is in the public domain.]