BBC Bitesize
https://www.bbc.co.uk/bitesize/primary
Lessons and games for each subject.
GoNoodle
This website has lots of active online videos for children to follow.
Blockly
https://blockly.games
Learn computer programming skills - fun and free.
Scratch
https://scratch.mit.edu/explore/projects/games/
Creative computer programming
Ted Ed
https://ed.ted.com
All sorts of engaging educational videos
National Geographic Kids
https://www.natgeokids.com/uk/
Activities and quizzes for younger kids.
Duolingo
https://www.duolingo.com
Learn languages for free. Web or app.
Oxford Owl for Home
https://www.oxfordowl.co.uk/for-home/
Lots of free resources for Primary age
Purple Mash
https://www.purplemash.com/sch/tlps#/
Coding and Computing lessons.