I’m not sure if you are talking about getting in to Lboro to study or to play for BUCS ?
To study - obvs no need to be sporty tho you will need strong grades (subject dependent) from AAB to Astars.
If you do mean to play for BUCS teams there, it depends on lots of things. The requirements will vary from sport to sport. Yes, to do the 100m sprint at BUCS outdoors you need to be running at national standard (by which I mean, strong enough to run in the UK champs). And ds2 didn’t get into the footy squad - tho tough competition for that is common in a lot of unis IME.
But if you want to do a less popular sport there’s space. Ds2 switched to American footy and the squad will usually include all who are interested. Three years ago they won the BUCS trophy and everyone got game time. There will be other options too for sure.
And even if you don’t compete, you can train using world class facilities, compete intramurally, get involved in the media work, be on the committee, just play for fun. Sport for all is a massive focus, including disability sport.
(you can ofc do all kind of other things at Lboro uni. It’s not just sport haha)