A while since we painted anything, but we used to get a 10 litre bucket from Ridgeons which was recommended by local trades.
I think it was Armstead which is apparently owned by Dulux.
Currently in the North West and Ridgeons is an East Anglia firm.
So looking for a recommendation for a proper trade emulsion, please, and trying to avoid the so called "trade" emulsions you see in the sheds which seem to be normal emulsion watered down to make them cheaper and require many, many coats to cover anything.
Cheers
Dave R