Hi Guys...
Been away across the pond, but before leaving had some sensible advice from Sean Yates. And got the watch back from local jewellers. Out of maintenance mode, keeping perfect time and I wonder if between goldsmiths and local jewellers somebody put a new battery in and forgot to put the old one back before returning my watch! Took the watch to Canada and back but had my £10 Casio with me as a standby. Not needed. Am quite sure that when battery does give out Sean will be the man...
Meanwhile thanks again for all your advice.