Imperial JMC with a Maths PS

I'm honestly not sure what to choose for my 5th choice on my UCAS. I've toyed with the idea of Maths and CS but am applying for Maths at my other 4 choices.

Was thinking of putting down Imperial JMC as my last choice - would this be stupid and/or lead to a straight rejection? I meet the entry requirements etc.

I think it would be risky for Imperial. Why not email them and ask if they'll accept a PS sent directly to them? It's not outlandish given it's somewhat related
to your other choices.

Agree with it being risky. Good shout to email them, will do that now - thanks.