My CAS has expired but I have not yet been able to apply for a visa. What should I do?

Where a CAS issued between 24 January and 31 December 2020 has become invalid because it has expired, or was marked as ‘used’ in an application and the student was unable to travel due to Covid-19, the Home Office will exceptionally consider accepting that CAS with a new visa application on a case by case basis.

The CAS will be accepted if the caseworker is satisfied that the reason the applicant couldn’t previously use it in an application or travel to the UK was due to Covid-19.