TfL Ref: 1026-1920

Thank you for your request received by us on 8 July 2019 asking for information about the London Underground.

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

the most recent occasion/ day the London Underground had a Good Service on all lines for an entire day it ran a service

I can advise that the most recent occasion of a reported 100% Good Service on all London Underground lines was on Saturday 29 December 2018.

We are committed to improving our network, which has more than a billion London Underground passengers each year and are making a number of major upgrades to our trains and stations as explained at: https://tfl.gov.uk/campaign/tube-improvements/what-we-are-doing?intcmp=1586

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely

Jasmine Howard
FOI Case Officer
Information Governance
Transport For London