I don't know for sure what a copper gets paid in UK today, but from conversations with officers who are currently serving, I don't think they get as good a deal as I got. I retired in 1988 and was getting something like £3,500 a year rent tax free allowance. That for sure does not exist any more, neither does free housing. Also I believe on promotion now they must sign up for a three contract, again I was virtually guaranteed a job until I retired at 30 years service.
It was also a lot less dangerous then to be a copper and in general they had the support of the public, unlike now. I would not recommend anyone to join up now. Thank God though many still do.