Large firms have been gradually updating their fleets, but smaller companies are finding the extension zone a significant cost. Chris Tomkins, proprietor of Kistrucks Bakery in East London and on the Essex border, told British Baker: "We only do 43 miles a day. We have had to buy a new van costing £11,000, otherwise it would have cost £2,800 for two filters and would have to be serviced yearly for up to £500. Otherwise, entering the zone incurs a £100 penalty per day."
Des Solomon, transport manager for miller Wright's Flour of Ponders End, Middlesex, said: "We have had to update four delivery vehicles, which has cost us £6,000-£7,000 per vehicle."