Have recently been into the local force's CCTV control room to fit a couple of new DVR's (digital video recorders).
Chatting to the staff there (who are not police, but civilian support staff) and they showed me all the city centre pictures from the cameras, and pointed out the poor focus and poor colour of some of the older cameras there for maintenance purposes. Anyway, I was also shown the ANPR system in the force area, and was STAGGERED to find out how many there actually are, hidden in advertisement hoardings, on top of lamp posts, and on roundabout signs!!
It appears there are over 20 of these around the immediate area, and the picture quality is superb. At speeds over 80mph the front number plate is "frozen" in an image, 2 seconds later (I kid you not!) the vehicles tax, mot, insurance, driver who it registered to, and possible previous offences are on the screen, and can be printed out of sent to a police officers "smartphone" at the touch of a button, roadside or mobile. the pictures are good enough to identify the drivers face in the windscreen of the vehicle in daylight too, but poor in night time, although the l.e.d IR unit still captures the numberplate clearly.
Quite an eye opener for me,the company I work for supplies all the kit, but is not allowed to fit it roadside, Serco and ACP are currently contracted to do this.
Also, by 2013, it is anticipated ANPR cameras will be on all main junctions, because they are small enough to be mounted on the top of the poles of traffic lights now.
Technology is a wonderful thing.........!!
*EDIT* just got the new COP Security 2010 summer catalogue, and on page 19 they now sell full colour ANPR cameras in hi-res 520tvl at only £299-00 each (trade). And for the unbelievers amongst you,
www.cop-eu.com/ANPR