@NowYouListenToMeFella
Tom currently in with the vet. He went ballistic when I closed the crate. Happy that I managed to do it. Thanks everyone for all the help.
Girlcat did the ballistic thing first time I crated her. Since then it's only ever been piteous crying for as long as we are in the car both directions, and silence at the V.E.T.
Boycat was so scared the first time I crated him that he was shivering and open mouthed panting until I got him back home. Now he's the same as his sister - cry on the journey there & back.