Correct. Your floor.Stratford (London) - managed by TfL. No 12
No it had wheels.
Deleted.
The GNoSR, with the HR trying to keep them out?
Was it claytons who built it. It was an enlarged version of the class 17. Can't remember much else about it.
Without going back to the issue of British railways illustrated or railway bylines (which is where I read about it), I can't remember anymore about it. May have been hydraulic as I think there was some mention of west Germany either as a market or some technical issue memtioned in the article.

Would their original SR numbering have been 1,2 & 3, becoming 15201/2/3 under BR ownership, because their withdrawal from service was as early as 1964 they obviously would not have received a TOPS classification therefore all I could suggest is 0-6-0 350hp diesel shunter?