Those that work for the Crown are classed as Civil Servants , yes many of them will only work 9 to 5 but many other Public Servants work around the clock and many on unsocial hours, some will be paid more than others the higher you climb up the greasy poll the more you earn.
They like anyone in work pay income tax NI towards the State Pension they also pay in a Pension fund , depending how much they pay in and for how long depends how much they get after 30 odd years or more.
I worked in the Public Section since the early 70's wages back then were not good better now, I must have missed the amazing holidays and endless sick pay.
Police Pensions have been mentioned they pay for their pensions and depending how long they have paid in depends what they get at the end of their service, if ill or injured they may mean a lump sum and a reasonable pension but not a full one
My wife worked for the council. She got 32 days paid holiday, and six months full sick pay that reduced to half pay for another six months. I worked in the private sector. All I got was £90 a week statuary sick pay and 20 days paid holiday. I think you will find that's quite different