If an occasional traveller is using Oyster PAYG even now, they'll still save money compared to buying the paper One Day Travelcard as long as they're only going to one station and back to HOP/FH.

It's when the new Travelcards come into operation that you'll get stung more as the zone 1-4 cap will come into play from January during the peak if travelling within those zones and 1-6 if you're travelling outside the centre.

Boris said on BBC London 94.9 earlier this week that only 300 people per day purchased the 2-6 peak One Day Travelcard compared to the millions who use Oyster PAYG and the One Day Zone 1-2 and 1-4 Travelcards.