Bioengineering course change at imperial

I got an unconditional offer from Imperial for biomedical engineering but I want to switch to molecular bioengineering (same department). I have emailed them about it and they said that they’ll soon get back to me with further information.
My achieved grades already meet the entry requirements for both programs.
Does anyone know if there’ll be another interview or anything I’ll need to do to transfer between these courses specifically?
Thank you.