To cope with ever-increasing passenger numbers, especially going to and from Canary Wharf, we completed the installation of a new signalling system in 2011.
This allowed us to increase the frequency of trains, so now we can run 30 trains along the line every hour compared to 24 an hour previously. This is the equivalent of carrying an additional 12,500 people an hour.
Every journey made on the line is now an average of two minutes faster as a result of the new signalling.
While the Jubilee line upgrade is now complete, track renewal work and other maintenance to keep the Tube safe and reliable will continue. Closures to sections of the Metropolitan line may occasionally require additional closures on part of the Jubilee line.
Work has started to upgrade Bond Street station - a key West End station that will become even more important when Crossrail arrives. There will be a bigger ticket hall, step-free access from street to platform and extra escalators to get you moving more quickly.
Sometimes this work may lead to changes that'll affect your journey.