Anti-terrorism laws were used to carry out surveillance on a family that wanted to get their 3-year-old into a certain school. The local council tracked them for a fortnight to make sure they lived in the right catchment area.
In a followup BBC article about an interview with the family:
The council has defended its actions, carried out under the Regulation of Investigatory Powers Act (RIPA).
The council admitted using RIPA laws, which were designed to track criminals and terrorists, on six occasions in total
You may have a problem with intrusive cameras (Well, if you don’t, you should have, if you put any value on personal liberty) but RIPA ups the game quite a bit from them. There’s a very balanced BBC piece on it which, in itself, should put the fear of Odin in you.
It’s not as if this sort of thing should be a surprise. An “anonymous coward” commented on the Register post:
WE were warned at the time that such powers would inevitably be used for trivial matters. The reason is the same as the answer to “why do dogs lick their balls ?” 
 Because they can.