so maybe you could buy 4 tickets from say Stratford to London (overground National Rail) at any station
But why not just buy a travelcard? You will need it for travel around London anyway. No need to waste money on additional throwaway tickets

so maybe you could buy 4 tickets from say Stratford to London (overground National Rail) at any station
But why not just buy a travelcard? You will need it for travel around London anyway. No need to waste money on additional throwaway tickets

Because a tube only travel card doesnt entitle you to use the voucher......there has to be a National Rail component....