Cardiff within the education system in Wales don't have a very good reputation for pastoral care and mental health/wellbeing. Yes they'll say all the buzzwords but when they come down to it they can make things awkward when it comes to accessing support. I did not attend however both my siblings did and whilst my brother who was very academically inclined sailed through his first class undergrad, he dropped out of his MA due to lack of support in a period of bad mental health. My sister who is much more creative lasted 5 months before dropping out of first year and was very unhappy with the level of support and is of the view that if you're an A/A* student you do fine but if you had to work for your grades there wasn't a acceptable level of support. She moved to Swansea and is now in her third year of the same course and is getting excellent support and her grades have improved dramatically.
Obviously this is just my family but I know a lot of my brothers friends had trouble with things like extenuating circumstances and academic support when their mental or physical health was an issue.