London Overground

[John]

Quick question - taking overground trains in London - e.g. from Finsbury Park to Hornsey... if I buy a Zones 1-2 One Day Travelcard, can I use that on overground trains too?

Or do I need a separate ticket?

Thanks.

[mathare]

Travelcards work on trains, tubes, buses and DLR. Plus trams where appropriate