Worried motorists are stepping up car security in the wake of reports of a growing wave of fuel thefts. Halfords reveals sales of locking fuel caps up 54% in the past week. Police also warn of a rise in thefts of number plates that can be used in drive-offs from petrol stations. The disturbing trend come as unrest in the Middle East has sent the cost of oil soaring, with predictions the price of fuel will rise by 5p a litre by April and could hit £8 a gallon. Police across the country are reporting a surge in petrol thefts and forces have launched campaigns to target the petrol criminals and advise garage owners to step up security. In Derbyshire fuel thefts rose 23% in the final six months of 2010. In Fife, Scotland’s second largest region, police say there has been a marked rise in thefts from parked cars, with fuel pipes being cut. Metropolitan Police in Hillingdon, West London said this type of crime is up after reports of gangs hitting cars parked in residential streets. The Metropolitan Police estimated over £500,000 of fuel was stolen from filling stations in the London by thieves using vehicles fitted with false plates.  More