In exceptional circumstances, you can request a deferral or a pause of an Ofsted inspection.
This is explained in paragraph 92 of the School Inspection Handbook.
What's the difference between a deferral and a pause?
Deferring an inspection is when a visit is rescheduled for a later date because it can't go ahead on the planned date. This is usually agreed before inspectors arrive, during the notification process.
Pausing an inspection is when an inspection has already started, but is temporarily stopped and inspectors leave the site. The visit is then resumed at a later date. This decision is usually made by the lead inspector, but