There's always Haydock Race Course, which is 25 minutes away by car, but to be honest, by the time you actually get to LPL from wherever you land, the money saved by landing elsewhere will be eaten uo by the extra transport costs.
You should also be aware that Ryanair etc occupy a different part of LPL to GA and it's quite a long way round by road. Perhaps you could negotiate a pickup as part of handling?