The Mike Bassett: England Manager star was using the luxury vehicle as a base in Chester, England while he filmed a wildlife documentary - and he was shocked when the holiday home went missing last week (13Jun12).
He tells Britain's The Mirror, "I can't believe it's happened. It must have been a well-organised gang as it (had been) two feet off the floor and resting on railway sleepers and breeze blocks because it was parked on a flood plain.
"The caravan was also down a lane over a mile long within a gated meadow. They lifted the gate off its hinges and must have had a decent-sized vehicle to take it away."
Tomlinson adds, "I am gutted (saddened) because I was in the process of letting one of my mates use it for a little outing for his two kids."