I am at a loss. I have looked high and low, and have not been able to source any VS systems products. I have tried the usual retail chains like Toys-R-Us and Woolworths, and also the specialist game stores in my area. No-one stocks it and my local specialist stores do not intend to order it either.

Does anyone know anywhere that does stock it in the UK, or will I have to resort to on-line purchasing?

You may want to try the GAMA Retailer Locator:
http://gamestoredirectory.com/wwwthr...directory.php. The international sotres are listed at the bottom.