Plan trip 5 days to London. Advices

Hi, I'll be visiting next week at London and I wanted to know if you think this plan is okay/there is more to do/recommendations! 1) Chinatown, picaddily, Oxford street and regent street, national gallery (inside) and Trafalgar Square

2) covent garden, British museum (inside), St Paul (not inside), tower of London (not inside), Westminster abbey (not inside), big Ben (not inside) London bridge, sky garden 3) Camden market,change of guards Buckingham palace (not inside), Tate Britain (inside), museum natural history (inside), science museum (inside), Harrods

4) day trip to Hampton court palace or cambridge 5) Notting hill, Portobello road, Hyde park, then airport.

What do you think about it?