Also, off topic, but if anyone is interested, DS (with my help) applied for his first adult passport using a photo taken on a mobile phone. The application has been approved so the photo must have been accepted.
It took a bit of fiddling to get the photo right. Getting a plain wall with good natural light on it and no shadow was not easy, but it was less hassle than going to one of those photo places in town. It meant DS got a nice photo too, which is handy since the driving licence etc will use it too.
Next, after the passport arrives, I'm going to order his provisional driving licence so that he's got ID that he can take out with him that is not his passport.
I'm finding it a bit weird that DS is grown up enough to have a NI number, adult passport and driving licence!