>I hope they inform their customers that filming and recording public spots or other people's houses in Europe requires advertising the presence of CCTV and adhering to data protection laws.

I live in the EU and have a camera on the front of my garage, pointing at the street and partially covering my opposite neighbour's house. I'd like to understand more about which rules I need to adhere to, I was unaware of this. Can you point me towards some resources on the subject?