Get asked at the ferry most years about spare petrol cans in the van, which to me is crazy when the bikes have juice in the tanks which are less well sealed than a jerry can.

Never been asked or pulled on either vessel about gas cylinders in the many years I have travelled and carried them for camping. It is in the T & C's and says you should contact the company.

Never seen Calor Gas on the island, though have bought Camping Gaz refills from the store opposite the Sulby.