"Returns and information 9. —(1) Registered dealers in controlled oil must make returns concerning their dealing in, buying and selling of controlled oil, at such time, in such form and manner, and containing such particulars as the Commissioners prescribe. (2) When such information as the Commissioners, for this purpose, prescribe comes to his attention, a registered dealer in controlled oil must, without delay, notify them of that information in such form and manner as they prescribe."
"Items and records (including an excise duty account) to be kept and preserved A revenue trader shall keep and preserve such records as the Commissioners may specify for any case or cases, in a notice published by them and not withdrawn by a further notice."
"As an RDCO, you must take every reasonable precaution to make sure that your supplies of controlled oil ... are only to persons who will use that oil as permitted by the law. [...]."
"a person who will use that oil in an excepted machine in the UK, as permitted by the law, as a condition of allowing the rebate."
"You must take all reasonable precautions to supply controlled oils only for legitimate uses [...] and not to supply [...] marked controlled oils for use in, or supply to, other jurisdictions where their use is not allowed."
"Supplying rebated fuel for use outside the UK Rebated fuel contains a mix of markers that are only used in the UK. Using it outside the UK is illegal unless it is already in the running tank of an excepted machine when it exits the UK. You must not sell rebated fuel to a customer who intends to use it for a non-permitted purpose in the UK. If you do, you may face penalties and other sanctions"
"For forecourt or distributor yard supplies made by pump or similar dispenser in excess of 100 litres ... you must record the customer's name, name of person entering the details (if different), contact details, transaction date, vehicle registration number, usage of the oil and date the last usage was checked [...]"