My daughter and son in law recently bought several vanity units from Victoria Plum or Victorian Plumbing. To make things easier they also bought the traps and pop up wastes.The first problem I had was the outlet from the trap was too small to take a standard 32mm waste pipe, I therefore bought some traps from Screwfix which solved that problem but I then found that the Screwfix traps would not tighten up on to the pop up waste, they would tighten so far but then pop off the thread. I therefore bought some pop up wastes from Screwfix and all fitted OK . I have since found out that I could have fitted a McAlpine EU to UK adaptors to the bottom of their pop up waste which would have enabled me to fit to the Screwfix trap. They are obviously supplying EU fittings without any advice about their compatibility to UK fittings and my questions are 'why do they do this' and 'how was I supposed to fit a standard 32mm waste pipe to the trap they supplied when the outlet to the trap was just not large enough to take it'. I would be grateful for any views/ comments on this.