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Add a railcard


Add keyGo to your Key Smartcard to get the best fares available on the day of travel for your Pay As You Go journeys.

Got a Key Smartcard?

Add keyGo today to Pay As You Go when you travel with Thameslink.


Pay As You Go and pay the best day fare for your journeys


Avoid the queues, no need to buy a ticket in advance


Travel with keyGo on Gatwick Express, Great Northern, Thameslink and Southern services as well as Metrobus and Brighton & Hove buses

How keyGo works

Once you have keyGo on your Key Smartcard, all your entry and exit taps across the network will be analysed to calculate the best day fare for your journeys based upon the tickets you could have purchased that day. keyGo will then charge the most appropriate ticket(s) for the journeys you made that day against your nominated payment card.

If you hold a Season ticket on your Key Smartcard, keyGo will only charge you for the journeys you make beyond Season ticket's validity.

Check the keyGo Network map to see where you can go!

Setting up keyGo

  • Once you have a Key Smartcard, you can add keyGo through your online account
  • Your keyGo account will be associated with a credit or debit card for automatic payment to be taken via a Continuous Payment Authority
  • Two hours after signing up to keyGo, you can start your first journey by touching the card reader at a train station specified with a yellow dot on the keyGo Area map
  • You can top up your keyGo balance with extra credit at local retailers with Payzone

Register for The Key Smartcard     Log in to your account

What fares are charged?

The best day fare offer is based on tickets that can be bought on the day of travel. We will charge you the cheapest fare based upon the taps you have made on your journey and the journey length to best guess the route you took. Fares are based on paper equivalent tickets defined as Peak, Off-Peak Day and Super Off-Peak Day single and Day return routed 'Any Permitted', 'Southern only', 'Thameslink only' and Oyster fares for journeys made wholly within the London zones 1-6.

Where journeys occur within the London zones 1-6, journeys will be Price Matched with the equivalent Oyster fare or Travelcard price for journeys that begin or end outside the London area. This includes daily capped fares.

Journeys made on Gatwick Express and services between Merstham and Gatwick Airport will be charged the National Rail fare.

Please note that first class fares and Railcard discounts are not available on keyGo.

Using keyGo

On trains

Use keyGo on Gatwick Express, Great Northern, Southern and Thameslink services as shown on the keyGo map. Touch in and out on the card reader as you travel to ensure your journeys are calculated correctly.

KeyGo can also be used on Great Western services between Redhill and Dorking Deepdene and between Warblington and Brighton.

You must touch in and out on all your rail journeys otherwise a £25 Incomplete Journey Charge may be applied to your account.

On buses

Use keyGo on Metrobus and Brighton and Hove bus company services in these zones:

  • Brighton, Hove, Falmer, Shoreham and Southwick
  • Burgess Hill
  • Crawley, Gatwick Airport, Horley, Ifield and Three Bridges
  • Dorking
  • Eastbourne
  • Haywards Heath
  • Horsham and Littlehaven
  • Lewes
  • Redhill and Reigate

Find out more about using The Key on buses at:

Payzone with KeyGo

You can use Payzone to add credit to your keyGo account at local retailers. Find a Payzone retailer here

To top up at a Payzone location, you must first register and have keyGo activated on your key card. You must still have a valid payment card linked to your keyGo account even if you use Payzone to top up.

Need to know more about keyGo?

See our keyGo FAQs

Read the keyGo terms and conditions 

Don't have The Key Smartcard?

Register online now to receive the smarter way to travel