On 28 July, 15:06, Clive wrote:
In message , Tony Dragon
writesGod, your making me feel my age, I can remember the 'Q' stock on the
District,

So can I. * I can also remember tube stock where the first half of the
driving car was taken up with equipment which went under floor in 38
stock, but I can't remember what they were called.

Usually called Standard Stock, although they were anything but
standard, being build from 1923 - 1934 with many detail differences!!
Sometimes referred also referred to as 1923 Stock.