We live fairly close to London but up until now we hadn't taken the kids there. A mix of not knowing where everything is and a fear of getting on the wrong tube stopped us when the children were younger.
However times have changed. My FIL actually owns a flat in Greenwich so this was our base. We stayed there on the Friday night, or as my girls were telling everyone, we camped out. This meant that we didn't have to get up ridiculously early in the morning to make it London for a good time.
The below picture shows how excited the girls were :
