Law firms wait an average of three months for their bills to be settled – more than twice as long as businesses in other sectors, a survey of LLP accounts has revealed.  The analysis of 321 firms, by finance company LDF, found an average delay of 94 days. The average payment duration across business as a whole is 41 days. Delays on this scale ‘could well tip firms which are otherwise very successful into dangerous territory’, said Peter Alderson, LDF’s managing director.