How 'recent' must the photo be (for Form AN + passport)

[jamEnergy]

I'm doing a joint AN+Passport application via NCS.

The AN guide says this
"You must include a recent passport size photograph of yourself with your application." without any definition of "recent".
It also says "Your application must be endorsed by two referees." implying that referees must see the photo (so they can say that it's a true likeness), so I guess the photo has to be sorted out before the reference.

Is a photograph that's 2 months old okay? Or should I wait?

This page doesn't say anything about recentness restrictions on the photograph (I think)
https://www.gov.uk/government/uploads/s ... n-v6_0.pdf

thanks

[CR001]

Yes should be fine.