Are you going to do London on your own? That's certainly what I would suggest. Possible exception would be a day trip out of town, but I suspect you want to concentrate on London itself, with so much to do and see.

We're just going to wander in Honfleur, I'm almost certain (although Rouen is tempting.)

Wendy
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Booked: Uniworld Egypt, 2015
Tauck Amsterdam to Budapest, 2016
Paul Gauguin, Societies & Tuamotus 2016