HCOS2800 | Registered Dealers in Controlled Oils (RDCO): RDCO law, contraventions and penalties: what must I look for when interpreting the law?
From HM Revenue & Customs · Hydrocarbon Oils Strategy
When searching for, or applying what appears to be a relevant legal provision, you must always bear in mind that the law:
states what a person can or cannot do
specifies that in particular circumstances a person must do something, or follow a particular procedure, (these provisions leave the Commissioners no discretion), and
if silent on an issue, it is unlikely to provide the Commissioners with the legal powers to permit, or facilitate it.