I am a South African citizen with a valid UK Biometric Residence Permit (BRP). I know I can use the BRP in combination with my passport to leave and enter the UK when travelling.

I need to travel for one week to the Isle of Man. Can I travel to the common travel area (CTA) countries with only my BRP and passport, or do I need to have a separate visa for this? I have researched this online and can't find information specific for expats with BRPs.

The closest I can find is from gov.uk, which indicates that I do not need a separate entrance permit if I already have UK entry clearance, which seems enough, but I am not certain.

Does someone have experience with this?