Until the end of 2024, you must continue to carry your in-date BRP and valid passport when travelling internationally.
In the future, you will be able to use your eVisa to travel to the UK. You will not need to carry a physical visa document, except for your current passport, which must be registered to your online account. You must check that your current passport or travel document is linked to your eVisa prior to travel. If you have more than one valid travel document or passports, you should update your UKVI account with all your eligible travel documents. UK Border Force and international air, sea and rail carriers should be able to automatically access your immigration information in the future.