This from Underground Ernie...
I see that TfL slipped this out on New Years Eve...
London Underground (LU) and Bombardier Transportation today announced that the signalling contract for the Circle, District, Hammersmith & City and Metropolitan lines (Sub Surface lines) will be re-let by LU following discussions between the two companies
To lose one signalling supplier, Mr. Brown, may be regarded as a misfortune; to lose two looks like carelessness.