The AA's latest UK Road Atlas detailing the location of all fixed speed
cameras in the UK

While this does not have the detail to pin point the exact location of each
camera it will show you which roads are camera free (although watch out for
crafty mobile traps) and to expect some alerts on the journey your taking.

Plus of course this has the latest most up-to-date information of the UK
road network so that you do not get lost while minding your speed and
dodging those speed cameras