Call or e-mail the HR / Ops on the Turbo Prop operators. Scott Airways from City is one. Southampton is busy with similar too. The other option is the Biz Jet market. They are quite restricted inside and you would be perfect. There may be a legal min. though. Just ask the horses mouth.
Do a search for the Airports you are looking for and that will list the airlines that fly from there. Use that info to get the recruitment info from the individual sites.
Look at www. ppjn (prof. pilots job network) which lists all of the operators too.
Good Luck!
JD