A prolonged conflict in Ukraine could result in diesel being rationed, according to analysts.
Although the UK largely sources its own petrol, half of the country's diesel is imported. Of these these imports, a third comes from Russia.
As world leaders scramble for solutions to reduce their countries' energy dependency on Russia, Some analysts have concluded there is a real risk diesel may have to be rationed
The UK has 12 million diesel cars on the road although sales are on the decline
A spokesman from the Energy Aspects consultancy told the Sunday Times: 'Risks of energy rationing and ultimately a recession are growing by the day - something most policymakers seem to be ignoring or not grasping right now.
'If Russian oil is not integrated back into the market within the next few weeks, we are at a real risk of having to ration crude and products by the summer.'
By Friday, its assessment had become even more urgent, with the warning diesel rationing could begin as soon as April.
It is understood these shortages would cause an even bigger impact that those of September last year, when petrol stations ran dry as the government claimed the problem was down to panic buying.
The Sunday Times report also said the Prime Minister could travel to Saudi Arabia in the coming days for a meeting with Mohammed bin Salman, in order to help keep oil prices down.