UK passport holder applications and right to work
If you already have a UK passport and a UK national insurance number you don't need to demonstrate your right to work in the UK with any additional documents other than your photo Passport ID.
Most production companies prefer passport photo ID as proof of right to work in the UK. To do this you will need your National Insurance number and Date of Birth handy. Upload Passport
For more details on the differences in right to work between UK, EU and Non-EU Citizens, click here: