Thank you everyone.
Cherbourg got my vote but the forecast for today was not great - cbs, hail, and mucky weather.
On the other hand Lille although not suggested seemed appealing. I have only been there once before and never into the town.
Lille it was then!
What a fab day! I thoroughly recommend Lille as a destination. The town is vibrant, the landing fee amazingly cheap for a twin, and the bus on the hour every hour in to town and on the half hour back saves on the taxis fares.
I will go again.
BRL sorry I didnt see your post earlier - do PM me and I would enjoy your company on another occasion.
Once again thanks everyone for the suggestions.