Kev wrote

What surprises me is that there is a factory anywhere in London let
alone Croydon or the whole of SE England come to that.
I thought that London as a 100% service industry sector. I suppose it
could be a warehouse for all those Far East imports.

There is *some* manufacturing in fact. Looks at BT classified section.

Boat & yacht building ? Makers of sparkling wine ?

--
Mike D