Ageism
As most airlines will admit, the older you are the harder you may find the TR course, especially if you have no previous relevant experience. That said, I worked for them until last year and joined them at 35yrs as 1st commercial job. Came across several "older" (and in my opinion much more reliable) new hires. Out of interest there is a grandmother flying the 146 who didn't start until her fifties I believe.
You will need to prove yourself against other much younger applicants so you will need to be very ready for the process. Don't know who interviews are with but I expect Don Darby (head of personnel) and Capt. Ian Cheese (Dash 8 fleet manager). Be very flexible with base if you can as the 1st job may need some sacrifices in that respect. When I started back in 01 most newies went to Belfast. If you get a chance to go there I thoroughly recommend it!!!!!
Good luck