Really? My partner is a former NHS manager. Although not strictly civil servants their wages against responsibility are obscene. Holiday entitlement and pensions generous to say the least. Redundancy money when offered is eye watering. As her job was briefly part of the civil service I've got no reason to believe their pay and conditions are any different. My lads are both and Uni but I keep telling them the civil service is the place to get a job. Far outstrips the private sector and if you can't do your job they will hire management consultants to do it for you
Presumably you read that in the Mail or the Express because it bears no relation to the real world.
Public sector salaries are matched against the private sector. In junior and admin posts salaries may be moderately better with superior terms and conditions but at senior levels officials are paid a fraction of what they could earn in the private sector.