Free Theory Test Resources
The Highway Code (free)
The complete Highway Code is free at gov.uk/highway-code. Read it cover to cover — it's the source material for the test.
Free practice tests
gov.uk/theory-test/revision-and-practice offers free practice questions. Also try Theory Test Pro (free via most libraries).
YouTube hazard perception
Search 'DVSA hazard perception practice' on YouTube. Hundreds of free clips to practice with.
Library access
Many UK libraries give free access to Theory Test Pro. Check your local library website — it's the same content as the £5 app.