I've just had a 4x400' feature, and the original box states it's a DACO FILMS release, for home exhibition only for the U.K., has anyone ever heard of this outfit, as in all my years in the hobby this is a new name for me.

Barry,
There is a Daco films listed with the BFI for a production company in Italy.The film listed is called Eroe Vagabondo 1966, with a second film called Quando la Pelle Brucia also from 1966.
There is no mention of an English company.
Hope that helps.

I don't think it's the same outfit, as the film I've got is an old British movie made during WW2 called "I'll Walk Beside You" and states the film is forsale in the U.K. alone, very unusual!