You can also use your Oyster card to get to and from London City Airport, via the Docklands Light Railway (DLR).
You have to ask a member of staff to load the concession onto a standard Oyster card (note, not a Visitors Oysters card ) at an Underground station after showing your Seniors Card.
Oyster card, a credit card sized transport smartcard, is an easy way to save time and money if you are planning to use public transportation in London.They can be issued for travel on any one day, seven consecutive days or for regular commuters, any period between one month and a year.If you have enough credit and think there is something wrong with your card, find a staff member to assist you.Provided the Oyster card is touched in and out, the cheapest appropriate single fare will be deducted from the payg balance.Adding a Travel Card If you purchase a standard Oyster card, you can add travelcards to your Oyster card if you would like to pre-pay for your travels.All three options, Oyster card, Contactless payment card and Travelcards cover the same London public transport, with the exception of Gatwick Airport (see below - The, london Underground network.It just depends on their age.Oyster cards if you register the card.
You can use Oyster or Contactless payment cards on the trains to/from Gatwick Airport but it may well be cheaper to buy tickets from the railways instead.There are few places outside London you can purchase them.London transport prices and policies are always changing, so be sure to check for the most updated prices and policies regarding public transportation fees and Oyster cards online at the Transport for London website before your trip to London!You can also use Travelcards on the London Underground and TFL Rail train services to Heathrow.Railcard holders may purchase certain Off-Peak Day Travelcards at a discount.If you buy in London you get the standard Oyster card.Capping varies based on the zones you travel in, but for example, for peak travel in Zones 1 2, the maximum daily fee.80 (as of September 2018).Here they will be able to refund the credit on your card, but they will return the card to you in working order, meaning you will be able to use it again.

They are also available onboard Eurostar trains traveling to London and at Gatwick Stansted airport.
Exclusions you should Know As mentioned above, the Oyster card does not cover travel to all of Londons aiports.
Oyster Visitor Oyster card differences - Key Facts: Oyster fares and caps are the same whether you use a standard Oyster or a Visitor Oyster, a common misconception.