Plan C - leave it on GMT (I do that with most of my cars - mainly because radio logs are GMT). It will only be "wrong" for 7 months of the year (not 6 as a local BBC radio presenter stated on Sunday afternoon!).
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '11 MINI Countryman Cooper D All4 '90 LR 90 SW