HI there,
You are 46 and have a PPL?
Do you want to work for an airline or flight instruct?
If its the first choice..Im sorry but I think you are a bit late.unless of course you are a pal of a bizjet owner and he keeps you a warm seat on his ship while you are off to the USA to burn holes in the sky and get your time up..
To get a JAA atpl you need to go through the 14 theory exams..i doubt you want to go back to school and study with 18-30 years chaps..
Long distance courses are available though but harder i would say.
You could also go for a flight instrution career..its rather quick..but not that expensive if you are planning to saty in that field.
Hope you get your chance to do what you always wanted to.
All the best,
M.85