The header raised a question.
In North America, meat and othrer perishables were, and still are,
transported in reefers. During the steam age, these were all coolled by ice
and or ice and brine carried in large large bunkers (usually) at each end of
the reefer. These days of course, they are mechanically cooled, both rail
and road reefers.
Was iced refrigeration ever used in the UK or were perishables just
transported in ventilated or insulated vans with no on board refrigeration?
I recall seeing both ventilated and white painted insulated vans, but never
noticed if they were refrigerated or not.
Home of the Great Eastern Railway