Following much research I have tracked down a company that can reproduce the hub caps from both the very early tubular style chassis Portafold and the later style with the long stub axles. They will be made using the original tools and will be available in either anodised aluminium or chrome plated mild steel. The price is £30 a pair at the moment (Feb 2009). It all depends on the price of metal at the time of order.
I've also seen on some of the early Portafolds an additional chrome embellishment around the wheel in addition to the hub cap, these are also available at around £25 each.
If anyone is interested in the hub caps could they please PM me and we can arrange an order.
