Hi Fil,
I'm from the Nottingham area and usually fly from East Midlands to Murcia(San Javier) using Ryanair, but like most airlines they stop flying from East Midlands to Murcia at the end of October.
Your best bet is flights into Alicante instead which you can look at Birmingham or East Midlands and again Ryanair is usually the cheapest. At a push you could look at jet2 from Leeds Bradford.
Regards
Tom
Murcia Villas