Derek YOU RULE !!!
£33.90 later and a lovely new battery arrived in my grubby little hands this dinnertime, roughly 20 hours after I ordered it.
It fitted a treat with very little persuasion and came with stainless fitting as well, even better the bike fired on the button so I am a happy bunny once more. Battery layout is the same and it is a sealed unit, so even fewer worries.
Summer is here