There are quite a few roles in Network Rail that pay well for and have a good work / life balance. I know of a few office based roles that are not safety critical, you have no safety of the line and no line management responsibility, which start at £51,000. This will be for a 35 hour week, Mon - Fri, with flexible home working.
Alternatively, if you wanted to go front line, if you came off the street as a PWAY Operative, you would start on £25,000. With shift enhancement, that is around £32,000 before any overtime, HGD etc is taken to account.
It all depends on what you value. Money, flexibility, balance, career progression, professional development, job satisfaction.....