wrote:
[snip]
My children (now over 18) were mainly able to get Day Travelcards, thereby
avoiding the queues. The game starts all over again in the autumn when my
granddaughter reaches the age of 5 but in the meantime the premium for
Travelcards has been so inflated (from Cambridge only) that they are
rarely worth buying. (1) I presume you can't get them from Nottingham at
all?

Of course, up to and including the age of 10 then your granddaughter won't
need anything if accompanied by an adult to travel for free on the
Tube/DLR/LO (and select NR routes[1]), nor would she need anything to travel
unaccompanied on buses.

She'll need a ticket if travelling on most of NR routes in London (including
basically all of them south of the river) - but that's because the TOCs
aren't kindly enough to offer free travel to accompanied children under 11.
A 11-15 Oyster photocard would be one way of dealing with this - if
travelling off-peak then the applicable cap is GBP 1.30.

Off-peak Day Travelcards for children cost GBP 3.00 - or GBP 2.00 if they
are travelling with an adult who has a F&F Railcard, Network Railcard
(weekends only), Gold Card or HM Forces Railcard - needs to be purchased
from a ticket office (though I'm guessing NR ticket machines may offer them
if the adult is buying a ticket for themself too [2]). See the bottom of
this page:
http://www.tfl.gov.uk/tickets/14554.aspx


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[1] Those 'legacy routes' that accepted Oyster PAYG prior to 2010, which are
almost entirely north of the river.

[2] Not in the OED... but it will be!