Investment programmes do take time, but within the first period of the contracts of seven and a half years, there will be significant improvements including a major update of the Victoria line and delivering new signalling on the Northern line, allowing more frequent-services. Additionally there will be a massive programme of work to repair and replace track, reducing delays caused by speed restrictions; work to replace lifts and escalators; essential works to improve drainage, strengthen bridges and repair embankments, and over 50 stations will be modernised, including improved CCTV to enhance security.