Jude Law has banned his teenage son from having a tattoo until he reaches 18.

The British actor's eldest child Rafferty is on the cusp of turning 17 and recently informed his father he would be marking his big day by going under the needle.

However, Law wasn't impressed and he warned Rafferty to wait another year.

He tells British Tv host Graham Norton, "He had an idea that he wanted to get a tattoo. I told him he wasn't (going to get one). I've got some, I don't regret them but I don't want him tattooed. I told him to wait until he is 18 and then re-think it and make all his mistakes then!"

Rafferty's mother is Law's ex-wife, actress Sadie Frost.

The interview airs in the U.K. on The Graham Norton Show on Friday (01Mar13).