If you're travelling 5 days a week I would be surprised if tubeless season ticket works out cheaper. I'm assuming you will need to make at least 450-500 tube journeys a year - pay as you go costs £2.40 for a single even within Zone 1 (so around £1100-1200 PAYG costs) and a season ticket is £1320 for Zones 1-2.
My Zones 1-6 travelcard adds about £860 to the season ticket cost (obviously YMMV), so the breakeven point is somewhere around 350 journeys, and also gives me free travel throughout London for leisure activities 365 days a year. Additionally it can cut the cost of some other Journeys where I am changing in London because I can buy a Zone 6 boundary ticket, e.g. when I travelled to Milton Keynes, Colchester etc which are the other side of London compared to where I live.
My Zones 1-6 travelcard adds about £860 to the season ticket cost (obviously YMMV), so the breakeven point is somewhere around 350 journeys, and also gives me free travel throughout London for leisure activities 365 days a year. Additionally it can cut the cost of some other Journeys where I am changing in London because I can buy a Zone 6 boundary ticket, e.g. when I travelled to Milton Keynes, Colchester etc which are the other side of London compared to where I live.
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