In answer to a recent freedom of information request about the former West Anglia route trains (FOI-0491-1516) it was stated:
"They were, however, leased on the basis that they had been overhauled by the owners, but have proved to be less reliable than TfL expected. This has led to some trains running in 'short formation', that is to say with fewer carriages than was intended. Regrettably some trains have had to be cancelled altogether."
Please set out the specific reasons why TfL had higher expectations of reliability than has actually been the case? Do you believe TfL conducted significant research and inquiries before leasing these carriages and have any lessons been learnt in terms of the need for greater preparation before entering into leasing arrangements?