On 12 July, 16:23, Clive wrote:
Which stock was used on the Hainault-Woodford ATO shuttles, when the
rest of the line used 62 stock.
--
Clive

For two or three decades it was four-car units consisting of 1960
stock driving motors and two converted "standard stock" trailers.
Later, the standard stock trailers were replaced by a single 1938
stock trailer.

Also, at any given time, one unit of 1967 stock would be allocated to
Hainault for running on the shuttle. It wouldn't always be the same
unit, but would always be one of the later batch, ie xx63 to xx79 if I
remember rightly.

The latter is inferred purely from observation. In many years, I
never saw one of the main batch of 1967 stock on the Central. If
anyone knows of some minor differences that could explain why (or
could provide counterevidence) ...

And it wasn't purely a shuttle even then. Several peak workings of
1962 stock ran to or from Grange Hill via Woodford, which meant that,
in the days of A and D coupling, the 1962 stock had to be kept
separate in Hainault depot, depending on which end it arrived from.