Henk, seeing as someone restored your BSA M20 & M21 T-shirt post, I thought I'd take the opportunity to mention that the tees are still available, and we've now got some XXL sizes in stock.
Originally we had just S,M,L AND XL. But we had some XXLs printed (actually we've got just two of them left; sold the other eight). So if anyone wants one of these XXL shirts, they're available. Here's a link.
Postage, unfortunately, is expensive, especially to OZ and North America. We actually subsidise this by a couple of quid or thereabouts, but we can't get the price down any lower.