Hi pipe can't really be bought threaded like you can in the states but there is places that do thread pipe for you I know of one place in London but your best bet is ask about if anybody knows a pipe fitter also the flanges are hard to come by in the uk I bought mine on a website called alibaba...
eBay is your best bet £1:46 each postage 16 pound I'm a pipe fitter by trade and have exhausted all my suppliers pipe centre come back with 126 quid Each
Only in America are floor flanges stocked I did get a price to have some made with a flange and welded socket but they did not look right for...
