To use BritBox promo codes, follow these steps:
- Visit the BritBox website.
- Sign up for a new account or log in to an existing one.
- Choose a subscription plan.
- On the subscription plan page, click on "Add a promo code."
- Enter the promo code in the provided box.
- Apply the code and complete the sign-up process.
For existing subscribers, log in to the account, go to "My Account," and enter the promo code under "Have a code to redeem?"