Train driving .
If I had my time again , I'd love to have had a crack at this.
Salary : About £50K for a basic 5 day week £70K with overtime
Good pension and travel benefits
Little or no contact with passengers , so no stress from that point of view
Most train cabs these days are clean , modern and comfortable , and even 50 year old Class 47's and 37's have a hob for putting a brew on .
Privatization and growth have led to competition for experienced drivers which has kept salaries at a high level .
I have met a driver on SW trains who gave up corporate law to take up train driving
The only downside is coping with jumpers , and statistically they are more common than the public realizes .
Or a Conductor. I cannot remember when it was, but I met an ex Army Air Corps crewman who had joined the train company and found that there was banter and stuff. I asked him if he missed flying and he said no.
I have met a few veterans from the different services doing the same job, and you get to meet lots of people.
Assuming you are physically fit, have an aptitude to study, and want to make a difference then why not become a Paramedic?