Binthere, It Comes From The Main Contractors Screwing Every Penny Out Of Every Subbie, In My Fathers Time It Was Called Subbie Bashing Now Its Called Prudent Management. The Big Firms Are The Worst To Deal With By Far, They Seem To Think They Are Within There Rights To Withhold Payment On An Invoice If Its Got The Wrong Number Blooming Scandal, There Not Long Screaming To Get The Job Done, But Pay Us Peasents On Time Never.