Hello 5 Rings!
I'm sure you would be in with a very good chance! LEA has a policy of promoting from within, so a lot of KingAir crew are moving up the ladder. A KingAir Captain started his Excel rating this week, so there are opportunities arising all the time.
Our KingAirs do a lot of Air Ambulance work, and 'Go Now' type operations for organ transplants, so as long as you could live within 1 hour maximum from Stapleford then you would almost certainly get an interview.
Good Luck!