The UK's most successful performers in the road haulage industry have been named by a research report into measures of company valuation.The top five performers, in random order, include bulk freight firm Fred Sherwood & Sons, Leeds-based GW Sissons & Sons and RDL Distribution, recently bought by Wincanton. G Sweeney and Maxi Group complete the list.Plimsoll Publishing's research showed these five achieved "outstanding financial performance", says analyst Clair Sherwood.