I wonder if anyone can help me i have a tower pc and i want to lock it down phisically but i am not sure where to look im sure some of you here have brought some security products but im not sure where to look do i need to know the size of my tower or will any tower entrapment device fit it.I want it to be custom keyed and drill proof lock and i want to buy from a uk company.

Thank you

Edit: I have an x86 based tower pc.