15d. Al leaves Henry with university puritans for comedians (9)
H-M-R-S-S. I can see H(al) and U(niversity) and definition HUMORISTS but what has MORISTS to do with PURITANS?
Glad to help Magpie. I'm still slightly puzzled with the wording because it does seem to be indicating that 'Al' leaves 'Henry' but, that aside, I don't see how else it can be parsed (that's not to say somenone else might see it differently!)