You can purchase Travelcards through several official channels depending on the type you need:
: Order through the TfL Visitor Shop (dispatched by post) or the VisitBritain Shop . buy london travelcard
: Available at Tube, DLR, London Overground, and Elizabeth line stations, as well as National Rail ticket offices. and Elizabeth line stations
: If traveling into London from outside the city, you can often buy a rail ticket that includes a Travelcard (valid for Zones 1-6) from train operators like Southeastern or Greater Anglia . Types of Travelcards Travelcards and group tickets - Transport for London buy london travelcard