One day they want to go to the zoo; we will take them there and pay for them and leave them for the day with a picnic and then collect them. Meanwhile we'll probably go to Wahacca and to Sir John Soanes, plus maybe the National and Portrait galleries.
Any ideas for the other days please? I imagine it'll be a mixture of doing things together and them going off for a couple of hours. In the evenings, we'll stay together.
They will be interested in shopping then. Top shop at Oxford circus a must. Carnaby st, covent garden ( fit all this in one day with maybe sushi lunch) and high st ken with museum and routemaster buses another
Go to the TKTS ticket booth in the middle of Leicester Square. Any shows with spare tickets sell them via the booth right in the middle of the Square. You could get a good bargain, and see what is available without traipsing round to the individual theatres. Please be wary of any other outlets around town who claim to be 'official'. The majority are not.
Take a walking tour around one of London's lesser known neighbourhoods - Spitalfields would be great: it's crammed with immigrant history (Huguenots, Jews, Bangladeshis), has incredibly beautiful early Georgian (Huguenot) houses and is really interesting as it has bonus bonanza City workers and uber-successful artists (Tracy Emin, Gilbert & George) living alongside very, very poor households. You get a real sense of London in its extremes. There are lots of Jack the Ripper tours in the area too because that's where he operated but I've never quite understood why anyone would want to do those .
You can then go onto Brick Lane (which runs through Spitalfields) for a curry or to its 24-hour beigel shops for a proper Jewish feast.
Also this website which offers 2-4-1 entry to loads of attractions (including London Zoo) with a rail ticket valid for that day - the trick is to buy a London travel card at a railway station rather than a tube station on the day that you want to use any of these offers.
As long as it's the overground bit of Euston, yes. But, if you come to London by train then the ticket for your journey down will be valid as well. So if you arrive reasonably early, you can have a day of 2-4-1 fun - at the station, just pick up a booklet about it and there are a load of little vouchers at the back that you fill in and hand over at the front desk of wherever you're going.
For Brick Lane, Aldgate EAST (not Aldgate) or Shoreditch are the best stations. Have fun.