Thought I would post the conclusion to the saga – as well as thanks to all contributors…
A guy came out at lunchtime bearing two batteries – 10 minute job and the 120 was running again quite happily. I could have done it myself, but glad I did not as getting the cover back on seemed to be a bit tricky/fiddly (he did not remove the seat first, which might have made it easier!).
£40 call out and £38 for the two batteries – fortunately as a diabetic I was exempted VAT on top of that. Thanks Guys 🙂
