Transport for London has published figures showing a decline in performance of the Tube in the autumn and winter of 2010/11, blaming strikes and new systems.
Even as recently as the latest four-week period that the report covers (to 23 July) there was a dip in performance with 65 station closures versus 49 in the four weeks before that. Similarly, in the latest period there were 135 train delays compared with 123 in preceding four weeks.
However, it says that there has been a long-term improvement since upgrade work began in 2003 with delays now down 35%. It added that the Tube was carrying record numbers of passengers with 1.1bn using it last year.
The publication of the figures comes at the same time as the release of a report into Tube performance compiled by the London Assembly which recommended a review of industrial relations following strikes over the past year.
Due to this recommendation, London Underground managing director Mike Brown and the National Union of Rail, Maritime and Transport Workers general secretary Bob Crow have agreed that any future individual tribunal cases will follow the normal processes for resolving individual disputes, including exhausting the ACAS mediation process, in advance of any ballot for industrial action being called.