Not sure what the best course of action is - can anyone tell me?

No one can really answer this because it depends so heavily on your unique situation (i.e. why you didn't pass the progress review, what issues/options they have communicated to you, etc.). The best you can do is speak with your academic advisor or supervisor and try to come up with a game plan or identify any action/actions you can take to put yourself in a better position. They are more likely to have knowledge of the process and can help support you most effectively. If you're not comfortable talking to your supervisor/advisor, reach out to student services and see if they can put you in touch with a support person.

@gjd800 - any thoughts or anyone else you can think to tag who might be able to help?

Ooft, tough position.

I agree with the first reply. It's hard for us to know because we don't have sufficient detail (and giving sufficient detail would involve telling us too much, in some ways). best to get onto student services and your student union ASAP.

It is unusual for a progress review failure to come as a surprise, i.e., OP, you must've known that you were struggling. What help did you seek?