Doing some maths to work out the best value travelcard to buy this year. I am contemplating a Zone 2-5 annual card, as most of my travel is out from the Manor House / Finsbury Park area to the northern suburbs.
However, once a week I travel to from there to Earlsfield and back. Out in peak time, back in off peak time. If I have a Z2-5 travelcard, what would the extension fare be for this journey, travelling via Vauxhall? I have a railcard on my oyster card.