Many thanks for the replies.
Here are my experiences:

1. Raw  linseed oil : several individuals prepared their surfaces using
this technique. Where the concrete was relatively porous, the oil was
rapidly absorbed. Several coats were required. Sooty molds were a
problem afterwards.

2. Epoxy resin: A prejudice against because of probable poor
installation of surface. In establishments such as hardware stores,
local to home, such surfaces are seen. When individuals bring in the
snow from outside and it melts - the result is a real potential for
broken legs, heads etc. Once you start moving, there is no stopping
until you hit something.

In France, a honey house that was built to demonstrate honey extraction
also had an epoxy floor - but with a granular ingredient added to add grip.
That it achieved, but the wax, propolis and honey were a pain to remove
from the surface. Also, the gritty material was badly distributed and it
resulted in a patchy finished item.

3. Concrete Paint: Blown off during pressure washer cleaning, resulting
in a potential for honey contamination.

As suggested, I shall get in contact with the relevant authorities to
hear what advice they give. Then when all is in place -I shall pass on
my thoughts.

Trevor, your floor level cooing strips. Fine for removing the tight
corner problem at floor level - but how is the junction between the
coving and the floor / wall achieved. Do you use a "shower" type mastic
(acrylic)?

Peter

Rather chilly at -22° C, snowing, with a breeze of 25 kph.

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