"Any thing liable to forfeiture under the customs and excise Acts may be seized or detained by any officer or constable, or any member of Her Majesty's armed forces or coastguard."
“The general policy is that private vehicles used for improper importation or transportation of excise goods should not normally be restored. The policy is intended to be robust so as to protect legitimate UK trade and revenue and prevent illicit trade in excise goods. However vehicles may be restored at the discretion of Border Force subject to such conditions (if any) as they think proper (e.g. for a fee) in circumstances such as the following: · If the excise goods were destined for supply for profit, the quantity of excise goods is small, and it is a first occurrence. · If the vehicle was owned by a third party who was not present at the time of the seizure, and can show that they were both innocent and blameless for the smuggling attempt, then consideration may be given to restoring the vehicle for a fee; if in addition to being both innocent and blameless the third party demonstrates that they had taken reasonable steps to prevent smuggling in the vehicle, then consideration may be given to restoring it free of charge. However, a vehicle will not normally be restored to a third party in a situation where that would be tantamount to restoring it to the person responsible for the smuggling attempt.”