I don't know the laws in UK but looking at some of the things ye can get away with is brilliant, we can't have fireworks for example - without a Garda permit and proof of proper supervision, that aside, this is a C&P paragraph on the law on domestic CCTV and if it is directed at the neighbours property
Domestic use of CCTV systems.
The processing of personal data kept by an individual and concerned solely with the management of his/her personal, family or household affairs or kept by an individual for recreational purposes is exempt from the provisions of the Acts. This exemption would generally apply to the use of CCTVs in a domestic environment. However, the exemption may not apply if the occupant works from home. [ Where the exemption does apply, a person who objects to the use of a CCTV system - for example, a neighbour who objects to images of her/his property being recorded - may be able to take a civil legal action based on the Constitutional and Common Law right to privacy.] It should be noted that recording of a public space, even partially, or when recording is directed outwards from the private setting, it may not be regarded as a ‘personal or household’ activity for the purposes of the Data Protection Acts, and this may have immediate and particular interest to drone operators and data controllers.
Reference: ECJ Ruling on household exemption C-212/13 - Ryneš