§ Earl Russellasked Her Majesty's Government:
How many trains on the London Underground have suffered derailment in the past 12 months, and what was the equivalent figure (a) five years ago; (b) 10 years ago; (c) 15 years ago.
§ The Parliamentary Under-Secretary of State, Department of Transport (Viscount Goschen)I understand from London Underground that there has been one derailment this year and that there were four in 1996, two in 1991 and 10 in 1986. Figures were not collected on the same basis in 1981. These figures are for derailments of passenger trains in service operated by London Underground, where at least one wheel of one vehicle left the rails.