Due to changes to the TfL website, the high costs of maintaining this service, and the fact the TfL now provide their own API, this site will shut down on May 15th 2014.
An Update On Tube Updates
As of 9th March, the TfL website was updated causing breaking changes to the way in which Tube Updates fetches its data. I no longer use the API nor do I have the time to update it. In addition, the costs for running the API have increased dramatically with donations adding up to less than 2 weeks of running costs over the 5 years this API has been available. TfL now provide their own API for this information so this service will shutdown on May 15th 2014.
If you are interested in historical data, there is an export file available which has all of the data I have accumulated over the past 5 years. This includes the change in status for each tube line, the overground, and the DLR since December 28th 2008.
-- Ben Dodson, 2nd May 2014