Speed cameras 'outnumber police patrol cars'

Staffordshire has 35 police patrol cars and 260 speed cameras – a ratio of one to 7.4, according to research by Auto Express magazine.

London's Metropolitan and City of London police forces have 140 patrol cars and 828 speed cameras - a one to 5.9 ratio. Another area with a high proportion of cameras is West Yorkshire, with 262 cameras and 56 patrol cars - a ratio of one to 4.7.

The magazine also found that some areas such as Durham, Dumfries and Galloway, North Yorkshire, Central Scotland and Northern Scotland had no speed cameras.

Also, patrol cars outnumbered cameras in some regions, including Wiltshire which has almost twice as many patrol cars as cameras.