Traveling with young kids can be exhausting, stressful and, let's face it, not always fun for the parent.
http://www.westhillconsulting.info/about.html
"Instead of cultural treats, daytime activities typically involve excursions to the zoo, children's museums, nearby amusement parks or a trip to the nearest outdoor playground."
"It is within 50 metres of Hampstead Heath and with easy access to bus, train and underground. Local restaurants and cafés add to the friendly, village atmosphere."