Originally Posted by
Terpe
For residence eligibility of British Citizenship (naturalisation) when a spouse of a UK citizen it's not more than 270 days outside the UK in 3 years prior to application and specifically, not more than 90 days outside the UK in 12 months leading up to application.
The UKVI caseworkers do have discretion to allow more when there's a good reason and without reference to a higher officer grade, but IMO better to keep it simple and within the general eligibility requirements whenever you can.