Hertfordshire have one of the oldest and most succesful animation courses in the country. They are going to set you up well - they have lots of successful grads and great industry connections so i'm sure they have regularly visitors from the animation and games' industries. I don't know too much about their other opportunities - most universities have some kind of global scheme, but you may need to be proactive about reaching out and asking questions about it.
On my Game Art course (DMU) we did do some outings to do observational drawing, but I don't know if this is consistent everywhere.
Bournemouth's BFX festival is great, for sure. I know Bournemouth Uni has a very established and well-recognised animation course - AUB I know a lot less about, I believe they are a bit newer. Ultimately it comes down to what you want out of university a bit - if having some of the "university experience" is really important to you, I can understand why that would make you want to pick AUB. I think Herts is likely to be the "safer" option for you in terms of quality of teaching, but that's not to say AUB is bad - I don't know much about the course and it's difficult to say as they don't have much student work displayed on their website.
I hope this is somewhat helpful at least 🙂