When does it make sense to buy a Travelcard instead of pay as you go?
If you stay longer than four consecutive days then the Travelcard does make sense. You would be extremely restricted if you chose pay as you go instead. Consider that on the Tube you will never pay less than £1.60 per journey. With that in mind you can start calculating how much you are likely to spend on journeys. The same situation applies if you stay a bit longer than seven days. Learn more here.