I have my new email address (jane.williams@ou.ac.uk) and can start looking at the various student discounts. Student Beans is one I've signed up for - it's free, and gives me discounts and freebies at places I actually use. Greggs, KFC... Free delivery on Deliveroo, if they delivered here, which they don't.
A TOTUM card would give more, but it costs per year, and I don't think there's enough there that's useable to be worth it. https://www.oustudents.com/whats-on/totum/
Still, that's another item off the "OU Ready" list.