Hi cleggy.
  It's not something I've ever thought to buy, but I wouldn't mind a look at it.  Does it fit without any modification to the bike - or does the pillion seat/grab handles have to come off? 
 Any photos of it fitted to the bike?  Roughly how much you asking?  I live in Sunderland, so could collect if I decide to buy.  Here's my e-mail for photos:  
steve@robins888.fsnet.co.uk  Cheers
 Steve