Well I bought some stainless steel jubilee clips, but the intercooler connections are made by some trick wire clips so I'm no further on really. The jubilee clips will come in handy, so no problem there though.
I was trying to prevent oil leaking onto the hoses, but although the clips felt a bit loose and allowed the hoses to twist and flex - they don't appear a very tight fit - no oil canm out of he drivers side one when I disconnected it from the intercooler.
Maybe I should just leave well alone!