Above will have given the best info as a Nottingham student, but just want to add to the not overworking yourself train. Burn out at vet school is terrible, and avoiding it by engaging in hobbies and just chill time for as long as possible is best. No, I wouldn't recommend working until 8pm every day during normal times, that would cause burn out. I am not overly recommending what I've done the last 2 years and I am intending to kick myself up a bit more once term starts again, but honestly all I did during non-exam times is go to practicals and other compulsory sessions, for the most part skip lectures as personally I don't learn from listening (at Liverpool they aren't compulsory, not sure for all other unis) and instead spend time hand writing notes + making some revision materials and otherwise I'd chill. Do as I say not as I do though, I would implement some official revision during term (not masses) to keep on top and lessen stress during exam time.
From looking at my Forest app, in first year I spent about 20-30 hours per month doing 'work' outside of official sessions, except in January and May when exams were and I kicked it up to 50-60 hours - I did pass fairly well around 65/70% average, but I didn't feel prepared tbh. In second year I started off about 20 hours a month (we had much less lectures to go through compared to first year) and then I got a kick up my booty as I failed my mocks so increased it to 30-40 hours a month, then in May I did just under 90 hours - I passed the same as I did first year but I felt much more prepared and like I actually knew stuff. Obviously as you go through the years things get more complicated (although you really couldn't pay me to go through first year again, the sheer amount of new info thrown at you was way too overwhelming) so I do expect to work more, but I wouldn't worry about doing loads and loads in first year. I think what was advised when I started first year was doing ~15 hours a week outside of official sessions, but that varies a lot depending on how you learn, how quick you take in info, the content of the week etc so more a guide.
Best advice is that it isn't how long you study for, but rather quality of the studying. People love to brag about how they do all nighters, or 10+ hour sessions in the library, or as above said start studying at 5am - I say sod that, that's not efficient or effective imo, to each their own I guess but that's certainly not something I'd ever consider doing. Find the best times you work at - some people it is in the evening, but I wouldn't risk your sleep as that's when you process info the most. Flash cards seem very popular but if you're just blindly flipping them over and reading them while your mind is on something else that's not much use. I also found that per lecture I'd easily amount 50+ terms, and with ~20 lectures a week in first year that seemed way too daunting and I never went throught them again once making them. But what really worked for me for subjects like limb anatomy where it's more 'this is this' rather than theory is using diagrams and summary tables for the muscles, so in second year I adapted this for all my other subjects to make summary tables and I think that's my way forward - for some they may be too simplified so everyone has their own thing, I'd try different approaches initially and see what works best. I also do something which everyone says not to do - I love my handwritten notes, but I do them very concisely and very quickly, usually 15-30 min per lecture unless it's really complex as I will properly research anything I don't understand before I write it, and I find that's how info goes in my head the best, then use my tables later as supplementary to test myself on what I remember. Typing seems to work for others, personally I don't retain typed notes as well, so as you can see it really is individual.
Another bit of advice that I haven't done very well but intend to do better is use your free periods. I assume Notts has some free slots like we do, e.g. we may have sessions 9-5 but may have gaps in between, if you spend even 30 min then that is 30 min less you'll have to do later and it can add up. Thinking in terms of 'I will finish x lectures today then go home' rather than 'I will spend 4 hours in the library today' imo is much better, again quality over quantity. Essentially, yes you will have free time. No, probably not as much as your friends doing 'normal' courses. But taking care of yourself takes priority - make sure you eat and sleep well, lots of time for relaxing, make sure you clean your room etc. I went into quite a bad depression in first year because I didn't put myself first, and as soon as I did (a planned 'cleaning day' once a week really helped) I've been so much happier and feel I'm getting stuff more.