Going there next week, taking ds1 almost 11 who the trip is for (industry geek, Brunel is his hero!!), ds2 who's 8 and dd is 5. They all like museums, but out of the ten available (we're also likely to get passport ticket for the year) which one[s] would anyone suggest to do first / do in October [obv potentially cold and wet] / are the most interesting to do?
TIA :)