Could TfL take the operation in house, or is it obliged to put it out to tender?
I think they could (not sure on the legalities) but have chosen not to. GTS takes over from May 2025 for at least 7 years:
GTS Rail Operations Limited announced as new operator for the Elizabeth line
tfl.gov.uk
It's been a terrible week for the Elizabeth line, and those of us living in the western section have definitely felt it this week! It's very difficult to feel like it's a total success when there is such a lack of reliability.
Indeed. A whole host of problems on all routes which included a tree on the line at Brentwood and a failed GA train as a result (Friday), complete tunnel ventilation failure in the Central section (Saturday), a points failure at Stratford (Sunday), a bag on the OLE near Acton in the PM peak (Monday), a power tripping and suicidal passenger (Tuesday), a signalling fault at Whitechapel / Stepney Green and a trespasser at Reading (Wednesday).
Not to mention the aforementioned loss of a driver RDW/overtime agreement and resultant shortages making recovery much harder on top of additional cancellations.
It never rains but it pours...