Those aged 16 or 17 can apply for an Oyster 16+ Photocard to obtain these child rates on 7 Day, 1 Month and Annual Travelcards. Top of the page London Travelcard vs Oystercard - what is the difference? Travelcards are a flat rate travel pass where you have unlimited rides in the se...
直接买张Oyster Card就好了，用多少充值多少，多了还可以退，简单好用。