Using CCTV can be privacy intrusive, as it is capable of putting a lot of law-abiding people under surveillance and recording their movements as they go about their day to day activities. You should carefully consider whether to use it; the fact that it is possible, affordable or has public support should not be the primary motivating factor. You should take into account what benefits can be gained, whether better solutions exist, and what effect it may have on individuals.
Example: Cars in a car park are frequently damaged and broken in to at night. Consider whether improved lighting would reduce the problem more effectively than CCTV.
You should consider these matters objectively as part of an assessment of the scheme’s impact on people’s privacy. This does not have to be an extensive or time-consuming process in all cases. The extent of assessment necessary will depend on the size of the proposed scheme and the level of impact it is likely to have on people’s privacy1.
You should use the results of the impact assessment to determine whether CCTV is justified in all the circumstances and if so how it should be operated in practice.
The things to cover in any impact assessment include:
Where the system will be operated by or on behalf of a public authority, the authority will also need to consider wider human rights issues and in particular the implications of the European Convention on Human Rights, Article 8 (the right to respect for private and family life). This will include:
If this is not the case then it would not be appropriate to use CCTV.

1 If you are establishing a large system, or considering a use of CCTV which could give rise to significant privacy concerns, you may wish to consider using the ICO’s Privacy impact assessment handbook.
2 If CCTV is used by a business or organisation, then it is the body that is legally responsible under the DPA (the “data controller”), not an individual member of staff.