I had a relation who worked for the Durham Police from 1895 until his death around 1927.
I contacted the police force and proved that I knew his DOB and explained how he was my Great Uncle etc. I received permission from Durham Police to access his police records.
I paid £12 for these - and it was amazing. I received 3 sheets of A3 documents. They detailed his height, weight, complexion etc. A full record of his service with all his promotions and dates. He started as a 3rd class Constable and by end of his service he was a Inspector !
Another page detailed his medical history and his misconducts, which included brawls and being drunk (apparently that was usual for a policeman back then).
Finally the last page had the best find ! When he died he left a pension of £60 per anum, which I believe was a lot of money back in the 1920's.
There was also information that he was awarded the MBE ! Which I traced further and found the entry in the London Gazette too.
I know I was lucky with all the above information - but I thought I would share my story, and hope that you find some similar details too.