1st year degree with HND in another Subject

Hi There

Hope you're well

I've applied for a few universities to do Psychology, and although one of the Uni's have confirmed they would be happy to accept me as a mature student into 1st year because I have an HND (even though it's in a completely different subject) at an open night, is this normal as I can't find anywhere in the entry requirements section to say this is the case? I should also mention I am in my mid 30s and have years of work experience including being an operations manager

If need be I will do another year at college doing social sciences (currently doing a national certificate level 6) however would rather go to Uni next year as I know I want to eventually be a clinical psychologist so have no interest in the other social science subjects.