VAT on intermediary services

Hello,

I feel I should know the answer to this but I am going round in circles!
I have been loaned goods from a Canadian supplier for display purposes. I agreed that once I was finished with them, I would post them to another stockist in the UK, and recharge the original supplier in Canada for the postage costs.
I am unsure whether to charge the Canadian supplier VAT? Having read the VAT guidance, I originally thought that because my customer was located outside the EU that the supply would be out side the scope, however as no goods have left the uk I’m not so sure!

Thanks