If your willing to travel then why not try Tayside Aviation at Dundee. They've recently acquired a Seneca 2 for ME and IR training. Theres only 1 IR student just now so lots of availability.
As a slight aside, do you really need to renew it?? If you will require differences training for the Chieftan then assuming an examiner is available then he/she could sign you off on the a/c and renew your MEP rating athe same time.