harry wrote in news:0395765b-42ac-4c50-8e3a-
:

You csn buy plastic strip that forms an edge to the tile or for
external corners. Available in a variety of colours and metallic
finishes. Good stuff, looks very neat if a bit fiddly to fit. There
is a perforated strip goes under the tiles to hold it in position.

Thanks. Yes, I bought some of that, when I bought the tiles. - but I forgot
to insert it before the adhesive went hard! I'll have to reasort to one of
the other suggestions kindly offered.

Al