Since I'm deep in battery acid at the moment searching for an upgraded unit I thought I might as well post some of the info I've found so far....
OEM Supplier - Yuasa.... http://www.yuasabatteries.com/search.asp (USA site - better than the UK one)
Exide http://global.exide.com/index.asp Varta http://www.varta-automotive.co.uk ***Varta seem to have come up with a good alternative so far***
Bosch http://www.boschautoparts.co.uk/pcBatt5.asp?c=2&d=1 and two good dealers (in terms of prices mind) that I have found so far....
MDS
http://www.mdsbattery.co.uk/departme...partmentID=155 BFM
http://www.bfmmotorcycles.co.uk/cata...ries/index.jsp Happy Searching