The government has changed its advice to motorists to top up petrol tanks after two days of panic buying.
It says this is no longer urgent after the Unite union ruled out a strike by its tanker drivers over Easter.
Meanwhile, several Labour MPs have called for Cabinet Office Minister Francis Maude to resign for earlier advising storing petrol in jerrycans.
A York woman, who suffered severe burns while decanting petrol at home, remains critically ill in hospital.
On Wednesday, Prime Minister David Cameron told motorists to "top up" their tanks in case of a strike, leading to long queues at petrol stations across the country.
Up to a third of garages were reportedly forced to turn people away after stocks ran out.
The GMB union said some ambulance drivers were having problems getting fuel - the government though insisted services were continuing as normal.
But a spokesman from the London Ambulance Service said: "We are not experiencing any particular difficulties in refuelling vehicles at the moment."
He added the service was holding reserve fuel in case of any future industrial action.
Demand for petrol now seems to be waning - down from a 172% rise on Thursday to a 28% rise on Friday, according to independent retailers' group RMI Petrol.
