The hon. Gentleman has lighted upon a subject that needs greater airing. While I accept that he will not press the amendment to a vote, there is a lacuna in the way in which we deal with the mentally ill in prison. If they come under the definition of vulnerable groups, this affords me a brief opportunity to say something about that.

As the Minister knows, or ought to know, there are far too many people in prison who ought to be under the care of the part of the national health service that deals with mental illnesses. I shall not go into historical analysis, because that is not strictly germane to the Bill, but it is important that we should understand that in our adult prison estate, there are people with mental illnesses—