Thank you all for taking the time to provide some hints and places to look. All very much appreciated.,

@Ewan, whilst I don't drive it much, it has had a few full tanks of fuel this year and I do make a point of winding out the engine from time to time. My normal driving of the Morgan is by far not just bumbling down B roads smile

@Heinz, thanks for the input I'll get myself a reader and poke around on the electrics to see if I can spot something amiss. Now that I think about it, I went over a rail crossing, known to me, a bit faster than I normally do and it was after this that things went south so perhaps something did come loose! Might pull the plugs as well to see if anything is amiss there. As for the timing belt change, it's going to get done early next year when I go for service.

@Sprinty, it was a coolish evening both times out and I was not hard on the car at all.

thanks again all.
P