Good luck to you Spotter, apply via the HIAL website but be aware that they regularly trawl the local population of each airports catchment area for bright young folk who are a lot younger than you and want to do exactly what you desire.
When I worked for the company, they had a very pro active approach to applicants from all sectors, although it would help your cause by a factor of 1000 if you already had the ADI rating - something to think about spending any resettlement funding on at CATC Bournmouth, ASTAC or Bae Cwmbran.
At the best its worth blowing £300 on an assessment, then you can either fund it yourself and be in a position of power to partially dictate your future.
Back to the CAS - although I have enormous respect for
C.S and the work he is doing at Inverness, until they get their own radar with SSR and passenger numbers exceed 1 Million, it won't even be considered - thats the latest gossip and goal post figures from the DAP.