I can't speak for anyone else, but I agree with this. Three camera NIPs (52 in a 40, 48 in a 40 and 69 in a 60, all with mobile devices) in 2 years, all ignored as the NIP suggests you do if you wish to take it to court. No correspondence will be entered into! All three dropped by the lazy, money grabbing do-gooders who run the councils revenue generation scheme under the auspices of a road safety campaign.
Errr, rant off and licence still clean.