Morrisons’ takeover by a private equity firm could lead to higher petrol prices in more than 100 locations.
The UK competition regulator has warned that private equity firm Clayton, Dubilier & Rice's (CD&R) £7billion acquisition of Morrisons could lead to higher fuel prices in 121 locations across the UK.
In January, the Competition and Markets Authority (CMA) launched an investigation into the supermarket takeover but it has now said it could pursue a deeper probe if these concerns are not addressed.
CD&R, which also owns petrol station giant Motor Fuel Group (MFG), won a lengthy auction to buy the Bradford-based retailer in October.
CD&R is the biggest independent operator of petrol stations in the UK.
MFG operates 921 petrol stations across England, Scotland and Wales under a number of different brands, while Morrisons runs 339 petrol stations at its supermarkets.
The regulator said it now has concerns in areas where MFG and Morrisons both have forecourts and would face "limited competition" from other players following the merger.
It said "the deal could lead to an increase in prices" due to the lack of competition.
The warning comes after a recent surge in the price of petrol and diesel and a 5p cut on fuel duty as announced by the Chancellor this week.
Figures from data firm Experian Catalist show the average cost of a litre of petrol at UK forecourts on Tuesday was 167.3p, while diesel was 179.7p
Colin Raftery, senior director of mergers at the CMA, said: "Prices for petrol and diesel have recently hit record highs, which makes it even more important that we don't allow a lack of competition at the pump to make the situation worse.
"We're concerned that this deal could lead to higher prices for motorists in some parts of the country.
"But if CD&R and Morrisons are able to address these concerns, then we won't need to move on to an in-depth investigation of the merger."
Supermarket rival Asda agreed to sell 27 petrol stations last year in order to help its £6.8billion takeover pass following concerns from the competition regulator.
The chain is owned by E&G Group owners the Issa Brothers.