Bristol do not interview at all. Liverpool have said they are giving interviews to everyone meeting academic and work experience (5 days of any animal-related work experience or doing the new MOOC) and interviews are throughout November and December. Nottingham have said interviews are going to be carried out in December, so you should hear back by the end of November.
I’m not sure if they send out emails saying they don’t want to give you an interview, but I imagine at least UCAS track will update with a rejection since for Liverpool and Nottingham you can’t get an offer without interview. Bristol will send you an Email either with an offer or rejection and it will update on track.