We also monitor performance and assets, measuring how far trains have travelled and how many trains, lifts and escalators are in service.
We are committed to providing passengers with details of how well the network is working and regularly publish a performance update. This is updated every four weeks - defined as a period - and gives figures for a range of service and network-related matters.
Latest performance figures
Performance data almanac
You can also find further latest and earlier information on Tube performance in the Performance data almanac (XLS 1.41MB).
Earlier performance figures
Recent customer surveys
We continually look at passengers' needs and priorities to ensure these are taken into account as the network develops. Many customer surveys are conducted throughout the year to gather people's opinions on our products and services.
As a passenger, you may be asked to take part in a survey while travelling on the Underground or by email. Please remember that if you do take time to answer, you'll be helping to shape our future service.