A hectic Wednesday but managed to make my appointment to look at the archived minute books of the M&SE Co-op Society. It is more an arrangement. They are in Central Reference library, Manchester but not held on site. So you have set a date when you want them available at the desk to peruse. Then it's handed over one item at a time.
Managed to find a few nuggets in between reading about the price of eggs, literally the monthly price of eggs in 1930 as the market was competitive with falling prices.
Found information about the stables at the back which cost £1,000 to build along with a yard. However not completed until after February 1930 after they had to complain to the builder to finish the work. By which time they had advertised internally for a charge-hand to run milk & egg deliveries. A weekly wage of 70/- (that's £3.50).
Now I know what they look like - ledgers with ink pen writing, and if you're very lucky typed sheets - I can find the answers to the questions. The problem with history is that answers only beget more questions.