Recommendations for week off with 18 month old

[LittleMonster100]

Dh and I have a rare week off work booked for June. Going abroad is not an option but we've booked an overnight stay at a uk seaside town. Any other recommendations on where to go/things to do in london / surrounding areas. I should add I will be 7 months pregnant then so some things may be limited.

Am thinking chessington? London zoo? London aquarium? Any other / better ideas?

Thank you.

[youmaycallmeSSP]

Legoland, London Zoo, the Aquarium, Natural History Museum, Hampton Court Palace (especially the gardens) interspersed with trips to the various parks. Sounds lovely!

[LittleMonster100]

Thank you youmay hopefully it wont rain all week :-(