A limited company clients business involves spending periods of time in the countryside at different locations. They have bought a motorhome to stay in whilst working. I've told them a motorhome is classed as a car and may give rise to a BIK, but they've said there will be no private use.
Can anyone suggest a way to prove that there's no private use if HMRC come calling? I was going to suggest a detailed mileage/date log explaining what they were working on at any time, but I can't think of anything else. The clients are a couple who are the only people involved in the company so I don't know if there can be a contract between them and the company restricting the use of the motorhome to business use only?