London Underground workers start 48-hour strike
4 February 2014 Last updated at 22:49 GMT
London Underground workers have gone on strike over proposals by Transport for London (TfL) to cut jobs and close ticket offices.
The RMT and TSSA union members started a 48-hour walk out at 21:00 GMT on Tuesday.
The unions want TfL to suspend its plans to close all ticket offices and cut 950 jobs.
The authority has said the measures are needed to modernise and save £50m a year.
Nick Robinson reports.