Dual citizen one passport out of date

[LondonDove]

I've had a last minute offer to go to France with free villa accommodation! My son's a dual citizen (UK/USA) but his UK passport is out of date. Will he be allowed to travel?

you mean how will you get back into UK?
He can get a UK tourist visa on his USA passport.

He's probably too young to renounce, so you can also prove his Right to Abode with the expired UK passport (I have done this often).

Yes that sounds my worry. That we will have problems getting back in.

Oh. The auto type is horrible lol. Yes that's my worry!

Contact the UK passport office immediately and tell them the situation. You may have to travel to your nearest passport office at very short notice to get him a new passport. AFAIK you have to travel on your UK passport to/from the UK. The US passport is only useful when travelling to the US (I too am a dual UK/US citizen).

Not true, Juneau. DC travel on their US passports only in & out of UK. 12yo DS did this on a school trip most recently in April. There are various ways I can show they have Right to Abode. Even if they didn't, border control could give them a 3 month tourist Visa like any other American.

So what do you do when the 3 months is up? Do you have to leave the country and come back in again? Isn't that a real PITA? I'd just renew the passport ...

OP making an emergency trip to passport office sounds like a huge hassle to me. Never mind the £70 fee for a mere 5 yr passport.

Nothing happens,. Nobody will come look for the child & if somebody did come find them, the OP could produce a birth certificate. (We once got baby DD into UK on just the tourist visa).

Like I said, with the boy's expired British passport the child can show he has Right to Abode; he's too young to renounce British citizenship.

Someone pointed out (Brexit related talk) that the real immigration control in UK is done by employers, not border control. Border control easily lets most people in but make zero effort to keep track of them after that. It's when the person goes to get a job that they have to prove their legal right to be here working. Yet another reason why Brexit will cost the economy money but won't limit actual immigration.