Internet Swap of Car Parts Gone Wrong

This question is posed on behalf of someone else. As I understand it, the facts are as follows:
Mr A, a Canadian, entered into a trade of car parts with Mr B in the UK. The terms were agreed to in e-mail correspondence. The value of the items on each side is the same, in the range of £1,000.

The items were sent by post. Unsecured post from what I can gather but Mr A insured his. Mr B did not.

Mr B got the item Mr A sent him, Mr A did not. The indications are that the item Mr B sent, after getting to Canada, were lost in the Canadian postal system. Contact with both the Canadian and UK mail systems has apparently been fruitless. The item sent to Mr A was not insured.

Mr A has asked Mr B to make good on the terms of their agreement by either replacing the items he originally sent or returning Mr A's item. Mr B's reply has been that were he to replace the items "He would pay twice."

Mr B's position can be summed up as it's not his fault, they both took their chances with the mail systems, and he bears no responsibility.

Is there any remedy for Mr A?

[Sapphire]

Re: Internet Swap of Car Parts Gone Wrong

Speaking as a courier/freight forwarder, if the goods were not insured then there is no redress, I know that UK Mail for instance will repay £10 per kilo, but have an excess of £55, but as the goods have gone through the postal system then I'd say that someone needs to have a good read of the T & C's, there might be something in there.

Sorry I can't be of more help