by posting in this section i take it you mean longnets Mal? i know a few on here make quality nets but i havnt got the patience for that. i've made a little stop net but would rather use my time making purse nets. if you mean purse nets on the other hand. give Pat a ring at Bridport nets, he should be able to sort you out. i use the spun nylon from there in yellow or red and find it top quality but it isnt cheap at around 10-11 quid for 500gram, then you'll need rings 8-10 quid for 100, needles, 2mm drawcord 8 quid+ for 1kilo and pegs.
have a look on osprey site. its a company down this wa