However, 100% fuel duty must still be paid on all Red Diesel which is purchased before a trip to Belgium.
However, from the CA's Facebook announcement
So stuffed if you've only got receipts showing a 60/40 split - ie not full duty paid?
Im not sure this deals with the issue of traces of red still present from historical use. I don't use red at all now but I know that a chemical analysis of my tank would show that it used to have red in it. I don't have receipts for fuel bought years ago.
What about continental boats returning after having refueled in the UK?