Tube Delays: Circle/Hammersmith and City Lines

tube train interiorStaff issues accounted for nearly 40% of the delays on the Circle and Hammersmith and City Lines in 2014/15. About half of this was simply staff absence and shortages.

As with other lines, signals failures, train fleet problems and action by customers were the big factors.

Transport for London measures delays in what it calls Lost Customer Hours (LCH). These are calculated by multiplying the delays in minutes by the number of passengers. TfL records all delays over 2 minutes. It uses the financial year from April to March and splits the year in 13 equal periods for performance measurement.

Data in the London Underground Performance Almanac for the last full year shows there was an average of 165,973 Lost Customer Hours per period on the lines. This makes it middle ranking in terms of performance across the network.

LCH Circle Hamm

Over the past 10 years as Lost Customer Hours have been reduced across the network the Circle and Hammersmith and City lines have shown one of the biggest improvements with a 63% reduction in LCH comparing the average for 2003/06 with 2012/15

Since 2009 the Circle and the Hammersmith and City line have operated as a end-to-end service, perhaps more a spiral than a circle running from Hammersmith to Edgware Road via Aldgate.

Source data

See also

Central Line leads the lost hours league table of your Tube delays

Strikes are a commuting disaster, but what delays your daily Tube journey?

Passenger data reveals busiest stations where Tube strike will hit hardest