I am looking to find out the number of oyster cards used on the TFL network that were not registered or linked to an Oyster Online account in the 8 weeks preceding the date which you answer this FOI request. When I say used, I mean used to tap-in or tap-out, but I am happy to amend this if you can suggest a better way to present the information. I am informed that journey data at the Oyster card level is only held for 8 weeks so this is the reason for the short period of time for which my request in based.

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TfL Ref: FOI-4614-1718

Thank you for your email received on 20 February 2018 asking for information about Oyster cards.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our Information Access Policy. I can confirm we do hold the information you require. You asked for:

The number of Oyster cards used on the TFL network that were not registered or linked to an Oyster Online account in the 8 weeks preceding the date which you answer this FOI request.

There were 6.39 million unregistered Oyster cards used for travel in the last 8 weeks.

Please see the attached information sheet for details of your right to appeal.

Yours sincerely,

Melissa Nichols

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London

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