1995 and 1996 Stock maintenance contracts

Do you mean Golders Green and Morden? Alstom were never responsible for maintenance at Stratford Market depot.

Way off topic and pedantic, but:

Northern line: Staff from LU transferred to The then GEC Alsthom (now Alstom) about 6 months after the 1995 tube stock contract between LU and GEC Alstom was signed. When the Tube Lines PPP contract started, the contract was transferred to Tube Lines. When the PPP ended, the contract was transferred back to LU. The staff remained employees of Alstom thoughout.

Jubilee line: on delivery, LU was responsible for maintianing the 1996 tube stock with 'technical support' from Alstom. When the Tube Lines contract started, the staff were transferred from LU to Tube Lines. At some time during the PPP contract Tube lines took technical support in house. At the ond of the PPP, the staff were transferred back to LU.

I clearly need to revisit my records to check what may be a dodgy memory.

Looks like my memory was, indeed, dodgy. I'll edit an upstream post when I can find out when the work was brought in house.

I retired in early 2010,think PPP finished a year or two before that.

It's an interesting perspective but even after the Tube Lines contract ended in 2010 it still remained very much a separate organisation despite being part of TfL, unlike, for example, the former Metronet companies. The former Tube Lines was initially known as Asset Performance JNP (most often referred to as AP JNP) and Amey were still involved until around 2016/17 (possibly even later).

For those of us who were brought back into LU from the Former Metronet (FMR) companies it was still very much a 'them and us' existence. I've seen paperwork from AP JNP that still referred to Metronet, despite the fact FMR was an inclusive part of LU. There was also a push for AP JNP people to do work on FMR assets, but there were some people in AP JNP who were very protective of 'their railway' that it only worked in one direction and FMR staff were very much persona non grata on AP JNP territory - as I found out when trying to deliver projects which interfaced with Earl's Court control room.

Similarly, if I'd had a pound for the number of times I've heard "on Tubelines we did..." followed by a description of something that didn't meet the requirements of the standards we were all supposed to have been working to, I could have retired early!

There was little attempt to alter the situation and properly integrate until the last big 'Transformation' reshuffle in 2018 (once Amey were off the scene), and some would say it's still never been satisfactorily integrated as even now the 'them and us' culture still exists and there are still different salary frameworks for the same roles. In some parts of the organisation it sometimes feels like a minority takeover took place, rather than a merger and integration.

One can only enivsage how things would have been if the PPP contracts had run for their full 30 years and then been re-integrated into LU!