London 11-15(yo) Oyster Card

DigForVictory

We're invading London for four days. I've an Oystercard from previous visits, and am borrowing another from a colleague for Mr.Dig. It's shifting the lads that flummoxes me - as it seems the only way to get a 11-15 child oyster card is online a month in advance.
I suspect I've left it too late & I'll be buying a handful of child day anytime travelcards.
Does anyone know if it is at all possible to get 11-15 Oyster photocard offline?!

DigForVictory

It isn't.
To add salt, as husband needed emergency surgery on his foot, we aren't in London, nor will we be any time soon, but it is not possible to delay the pickup of the lads' cards - I can cancel, reorder & hope for a refund, but hold onto the finished items already waiting at the tourist info office an extra fortnight? No, TfL doesn't.
Trying to find local relatives who I can post birth certificates to.:(