Khan Academy

Especially good for maths and computing for all ages but other subjects at Secondary level. Note this uses the U.S. grade system but it’s mostly common material.

BBC Learning

This site is old and no longer updated and yet there’s so much still available, from language learning to BBC Bitesize for revision. No TV licence required except for content on BBC iPlayer.

Futurelearn

Free to access 100s of courses, only pay to upgrade if you need a certificate in your name (own account from age 14+ but younger learners can use a parent account).

Seneca

For those revising at GCSE or A level. Tons of free revision content. Paid access to higher level material.

Openlearn

Free taster courses aimed at those considering Open University but everyone can access it. Adult level, but some e.g. nature and environment courses could well be of interest to young people.

Blockly

Learn computer programming skills – fun and free.

Scratch

Creative computer programming.

Ted Ed

All sorts of engaging educational videos

National Geographic Kids

Activities and quizzes for younger kids.

Duolingo

Learn languages for free. Web or app.

Mystery Science

Free science lessons.

The Kids Should See This

Wide range of cool educational videos.

Crash Course

You Tube videos on many subjects.

Crash Course Kids

As above for a younger audience.

Crest Awards

Science awards you can complete from home.

iDEA Awards

Digital enterprise award scheme you can complete online.

Tinkercard

All kinds of making.

Prodigy Maths

Is in U.S. grades, but good for UK Primary age.

Cbeebies Radio

Listening activities for the younger ones.

Woodland Trust

Activities. Some of these can be done in a garden, or if you can get to a remote forest location!

British Council

Resources for English language learning

Oxford Owl for Home

Lots of free resources for Primary age

Big History Project

Resources for English language learning