Can international students apply to direct portal universities AND UCAS for medicine?

Hello! International student here. I know that Buckingham, Central Lancashire and Brunel offer direct portal applications for medicine if you are international. However, does this still apply if you are going to be applying to other universities through UCAS as well? e.g. if I apply to a university in UCAS, will I be automatically rejected from the direct university and vice versa? I know that other universities will immediately discard your application if you're applying anywhere else but them. Could really use the help!