Has anybody flown overseas with their iguana? (from USA to UK)?

I currently live in Florida but will be moving back to the uk soon, the only thing is i have a green iguana that i want to bring back with me. Has anybody had any experiences like this? We seem to keep hitting dead ends, we phone one company they give me another number, i phone them and they have no clue about travelling with iguanas. Any infomation would be great, thanks!