The plan as its evolving is that we will spend a couple of weeks around central London and "do" there, and then drive around the UK. Then we'll base ourselves we're thinking around Lyon for a month - easy gateway via train to pretty much everywhere. DD2 is a seriously dreadful flyer (who knows what DD3 will be like) and so for that reason we will predominantly stick with either driving or train travel. Then thinking either around Florence (I've always wanted to spend extended time in Italy) or somewhere else - just not sure of the somewhere yet ! Seems that its also morphing into a month or two in the US on the way home too - combined work visit to "the office" for my DH and holiday. I'm insisting on at least a week somewhere like Hawaii on the way home with a whole lot of childcare options ;-)