Looking for logging into the Su site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Su site. After that you can login as usual with your login credentials.
https://unix.stackexchange.com/questions/318572/whats-the-difference-between-su-and-su-login
https://www.warwicksu.com/login/
https://www.essexstudent.com/login/
https://hertfordshire.su/login/
https://www.bristolsu.org.uk/users/sign_in?click=hyper
https://www.uea.su/login/
https://www.su.rhul.ac.uk/login/
https://su.sheffield.ac.uk/users/sign_in
http://www.su.dk/
https://www.su.nottingham.ac.uk/login/
https://vfu.su.se/Shibboleth.sso/WAYF
http://www.linfo.org/su.html
https://sumail.syr.edu/