Northbrook College at Shoreham Airport (Sussex) take students of any age over 19 on the EASA Aircraft Engineering courses.
Currently it's a two-year CAA approved course which will get you an A licence for piston and turbine engines and aircraft. Successful students are normally snapped up pretty quickly by the General Aviation and Airline industry.
Most courses have one or two "mature" students among their numbers who have always had a pretty clear run through the examination and practical hoops. Motivation, ability to private study and behavioural maturity tend to be an example to the "Jack-the-Lads" !
Only problem is you've got to contribute to the costs and support yourself for a couple of years. You may be entitled to Central or Local financial assistance and the training programme usually recognises that most students have to engage in "part-time" work to keep themselves in beer money - and maybe give Mum a bit towards their keep !
If you're interested, give Northbrook a call/Email/visit.
Best of luck.