Your age and life experience will be an advantage to you with most UK turbo-prop operators, its fantastic fun flying but with limited terms and conditions and very poor pay at low-houred FO level.
A command is a possibility too, when times are good maybe within 3 years of joining...providing some level of recruitment/expansion is taking place to create some movement...
I would agree with the above, especially as things may pan out in the next few years, maybe 'big company jet' job is a little out of reach - only because airline economics will dictate you'll be up against a 19 year old who'll be doing it for nothing or someone type rated with +2500 hours and not a training risk.
Good luck