Where I lived until 1950 in the hinterland Black Country just south of Wolverhampton ( as so beautifully modelled in "Black Country Blues" ). The Wolves to Dudley branch ran across the top of our road ( Daisy Bank Station) .
We had a small farm behind our house, where they kept a couple of cows and the rule seemed to be that if the cows had been milked, we got a delivery of fresh, un- Pasteurised full cream milk served from a churn on small high-sided cart pulled by a pony. When not pulling the cart the Pony seemed to spend a fair bit of time with it's head over our fence,