Not sure what you mean by internship. We don't have them over here. You are either qualified and registered with the HPC or you are not. If you are then you are a physio. If you mean how can you get a job over here as a band 5 (Junior physio) then you will need to start the process of getting accepted by the HPC as a UK registered physio. Full details can be found here HCPC - Health and Care Professions Council - International