Hi

According to the government website which can be found at

https://www.gov.uk/becoming-a-britis...ritish-citizen

2. If your spouse is a British citizen

If you’re married to, or the civil partner of, a British citizen, you can apply for citizenship if:
- you’re 18 or over
- you’re of sound mind, eg you’re able to think and make decisions for yourself
- you’re of good character, eg you don’t have a serious or recent criminal record
- you’ve met the knowledge of English and life in the UK requirements
- you’ve been granted indefinite leave to stay in the UK (this means there’s no specific date that you have to leave) or permanent residence if you’re an EEA national (and you have a permanent residence card or document that shows you have permanent residence)
- you meet the residency requirement

Unless your spouse or civil partner works abroad either for the UK government or for an organisation closely linked to government, you must usually also have:

- lived in the UK for at least the 3 years before your application is received
- spent no more than 270 days outside the UK in those 3 years
- spent no more than 90 days outside the UK in the last 12 months
- not broken any immigration laws while in the UK

Hope this helps
Rosie 1958