I have seen my mate this evening and he has had some success. The initial idea to create an exact copy unfortunately did not work. When the machine punched out the metal it left the remaining aluminum so brittle that it could bend too easily.
So he has moved on to making replicas with mesh. At present he does not have anything which is an exact match. He can buy this in, but it is £50 a sheet and he is unwilling to do this unless I can provide him with some sort of commitment from people. The price will be no different, still looking £20, but it he said unless there are 5 people (of which I am one) who want them, it is not really worth his while.
Have a look at these and let me know what you want, if anything and I will place an order with him accordingly. The original is the dark/slightly rusty one:
I have a few more pictures if people want them.