Naturalisation eligibility

Hi,

A has got her recently got her British passport. B is A’s husband and holds ILR since Jan 2021. He’s got ILR through long stay but not through spouse visa.
Can B apply for apply for naturalisation since he is married to a British citizen? Or he has to wait until Jan 2022 when one year of holding ILRis over?

Thanks

B can apply now as long all other AN requirements are met.

Thanks for your reply.
What do you mean by ‘AN requirement’?

Form AN, the application form you use to apply to naturalise as a British citizen!