All leave from your studies requires approval.
Short-term leave (excluding annual leave) needs to be requested via the short-term-leave e:Vision task. This will not result in an extension to your progression or final submission deadlines.
A leave of absence allows you to take an authorised break of a month or more from your studies. You may apply for a leave of absence for a documented medical or personal reason. Any postgraduate researcher can apply for a leave of absence. It can be a good solution for a postgraduate researcher who finds that medical or personal difficulties are preventing their study for a period of time. However, approval remains at the discretion of PGR Special Cases.
You should apply for a leave of absence in advance. A leave of absence that is entirely retrospective will not normally be considered or approved (and cannot be approved for those on Student Visas).
Postgraduate researchers on Student Visas should be aware that a leave of absence will impact on their eligibility to remain in the UK, and should therefore consult with the Immigration Advice Service before making any decision.