We would expect nothing less than for you to be contentious AllanmI know this will be contentious, but the onus is on the driver to keep to ( or just below) the speed limit.
The police cannot prosecute you for speeding unless the speed limit for that road is signed. ( lit residential roads subject to 30mph limit with no signage excepted) They will only enforce a posted limit ( lit residential roads subject to 30mph limit with no signage excepted. They cannot do otherwise, whatever anybody tells you.
The Highway Code is available for every driver to study, they even have their own versions in foreign countries, it is your responsibility to read it and abide by it.
Sometimes you have to take responsibility for yourself without blaming others for the predicament you find yourself in.