At what age do I have to purchase a Travelcard for my children to travel in London?

Children under 11 years of age travel free during off-peak hours within the London Travelcard area (Monday to Fridays after 0930, anytime Saturday, Sunday and Public Holidays).  Children do not require tickets and should be allowed through gates/side gates as necessary.  Accompanying Adults should use gates in the normal way and if using Oyster Cards, touch in and out at all times.

Each Adult Travelcard holder can take up to 4 Children under 11 for free and up to four 11-15 year olds for a £1.00 flat fare All Zones Off-Peak Day Travelcard. No Photocards are required by any accompanied children.