With around three and a half million journeys made each day, on 11 lines serving 270 stations, we are now running more services than ever before on the 150-year-old network.
The Mayor's Transport Strategy sets out the approach for achieving the Mayor's transport vision: that London's transport system should excel among those of global cities, providing access to opportunities for all its people and enterprises, achieving the highest environmental standards and leading the world in its approach to tackling urban transport challenges of the 21st century.
Our vision is to deliver a world-class Underground for a world-class city. This is a realistic goal, and we have made great strides, but there are still challenges to overcome before our upgrade of the Tube is complete.
Our strategy is to deliver a reliable train service with the highest standards of customer care.
We plan to do this as efficiently as possible through our people and technology.
Passengers use the Tube because it is fast and convenient. Fundamentally, the service needs to be reliable and we must have well-trained staff, infrastructure that works and systems to ensure we swiftly recover from delays.
The historical under-investment in the Underground has left it with unreliable and outdated infrastructure. Our first challenge is to deliver a reliable and safe everyday service, despite this.
Reliability and safety may be the foundations of a good service but they cannot make a transport system world-class on their own. Our surveys show that the quality of travelling time is also important to passengers.
The experience of our passengers has always been at the heart of our strategy. This is shown in the way we operate - providing visible and helpful staff, high-quality information and security systems, and investment to make the network more accessible.
Our challenge is to keep London moving while we transform the Tube.
To overcome the legacy of under-investment, we have embarked on a massive investment programme to deliver the extra capacity needed to keep pace with rising demand.
The level of renewal and refurbishment work is on a scale unseen for more than 60 years. It presents a major challenge: maintaining the service during the biggest rebuilding programme the Underground has ever seen.
London was the first city in the world to boast an underground - in the 21st century it deserves one that is world-class.