Looking for JMO or Cayley or Hamilton model answers / proofs

I am wondering where I can find some examples of actual model student answers from any of the UKMT olympiads? I have several of the publications by UKMT as well as access to online answers, but I would like to see how real students have written their proofs.

Anyone know of links where I can see some? Or would anyone be able to post or send me some of your own?

Thanks!