Question Author
Hi Andyvon
Thank you. Was hoping someone would have had similar experience and could advise. Have found highly spoken of one man garage where the mechanic is going to check the adjustment in case Honda has made a mistake. Honda charge £30 for this. The guy is getting me new bulbs and fitting them. Charge for fitting? No charge! He also explained, as you did, what could be causing the dimming. What a change from the guy who said it could be the switch off of street lights 4 miles away. Will stick with this garage for future car care.