First, there's no easy answer to your question, been there btw when made redundant around the time of 9/11.
Have you considered railway stock maintenance at all ?...it's a well trodden route, and the safety critical background you have is, I'm assured from those I know in the industry, a big plus.
Driving, perhaps ?.....did that for a while and you would be surprised who you meet from other occupations whom you would never have thought you would see driving for a living.
How about gas / central heating engineer, albeit you need to get the quals as well. Again, I know of a couple of former Lic Engs who went down this route.