I have a strip light and am happy with the light it gives out - however, it
is a bare tube fitting and it is starting to buzz a bit.

I saw some attractive shop fitting lights in Sainsbury's - part of a
trunking I think - anyway, it got me thinking about whether there is a
source of better than basic strip light fittings. The ones I saw made use of
2 small diameter tubes and perforated metal reflector / diffusers.

Any pointers to suppliers / catalogues, etc?