Anger over 'speed camera lottery'
Motorist groups have called for greater consistency over speeding fines after it was revealed drivers face a "speed camera lottery" across the UK.
The financial accounts of 35 camera safety partnerships have shown speeding drivers are more likely to be prosecuted in some areas than others.
The Department for Transport, which published the details, said the figures showed only a "partial picture".
But campaigners said drivers were receiving mixed messages over speeding.
The Department for Transport said several factors, including the fact that emergency vehicles sped past cameras and some police forces offered speed awareness courses instead of fines, affected the statistics.
But campaigners said there should be more consistency across the country.
Avon, Somerset and Gloucestershire (57%)
Greater Manchester (53%)
Greater London (46%)
A spokesman for the RAC said: "You could be driving through one county where prosecution rates are high, but in another the message could be very different."
Counties with the best records all had a 100% conversion rate from when offenders were given notices of intended prosecution to them being fined.
They included West Yorkshire, Cheshire, Humberside and Kent.
Those with a low record of prosecution included Greater London, Essex and Greater Manchester.
Bedfordshire and Luton
Others called for the problem to be investigated.
"It's a little worrying that the figures are so low in some areas," a spokeswoman for road safety pressure group Brake said.
"People who speed need to know that there's a reasonable chance that they can be caught and, if they are caught, they are going to be prosecuted for it."
The RAC said number plate cloning or failure to update registration details could also affect the statistics.
"In London, where the chance of being fined appears to be low, people move addresses very quickly," a spokesperson said.
"Some forces offer speed awareness courses instead of points on a licence," they added.
A spokeswoman for the Department for Transport said the statistics needed to be considered alongside other factors, such as speed awareness courses or whether the case has gone to court.
"It doesn't necessarily mean that if a speeder gets snapped by a camera they get away with it," she said.