Are short gaps without CSI acceptable?
If you are applying for British citizenship and you have short gaps (as a student or self-sufficient person) without CSI, this may not be a problem.
Realistically, you would support your application with evidence which is spaced out over the months of each year, rather than covering every single 2 week period, so such a short gap would not even feature.
If you had a short gap without CSI when you were a student before obtaining CSI, it might be worth explaining the reason for that and asking for discretion for the gap. If your short gap is during a work period, this generally is not a problem as your work evidence should cover longer periods of time. For more information on how unemployment affects CSI, please check question Should I have CSI during periods I was unemployed?
Note: this question, like other FAQs on Comprehensive Sickness Insurance (CSI), relates to applications for British citizenship, when considering whether periods of past residence were lawful.