Does anybody have any update on this unit, please, as I believe it is still out of service?
3 scenarios about the prolonged delay occur to me.
I can imagine that after the fatality mentioned in message 2 by Brambling there was little wrong with unit but it has become a handy christmas tree for Hornsey and is now in need of more significant work.
Or that the unit was badly damaged and the repair work is long and complex.
Or there was something suspicious about the circumstances of the fatality and the unit is legally impounded while any court action etc. is ongoing? I do not mean to suggest by this that there is any fault whatsoever by anybody within the railway industry.