BBC Bitesize for KS1 learners

https://www.bbc.com/bitesize/levels/z3g4d2p

BBC Bitesize for KS2 learners

https://www.bbc.com/bitesize/levels/zbr9wmn

Topmarks games for KS1 and KS2 Maths and English

https://www.topmarks.co.uk/

Spelling practice for KS1 learners

https://www.educationquizzes.com/ks1/english-spelling/

Grammar games for KS2 learners

https://www.educationquizzes.com/ks2/english/