I’ve applied for Mitigating Circumstances but not heard anything back

It’s up to your School when your request is considered. Generally extension requests are dealt with soon after they’re submitted. 

Mitigating Circumstances claims are discussed at the Special Cases Committee in your School. These usually happen after exam periods, but some Schools hold meetings more regularly. 

If you want to find out more about where they’re up to with your case, speak to your School.