is something I would definitely suggest this time of year.
Also be aware that London is very expensive food wise. It cost our family double the usual cost. Even to go to McDonalds. It's a fun place however.

Changing of the guards--very crowded, somewhat over rated.

Tower of London- MUST SEE!!!!

West End show. I saw Les Miserables in London and it was as good as the Broadway version.

Take one of the bus tours. They do an over view of London and then you can decide what peaks your interest and can go from there.

Have fun!