BP announced about its adding 1p to the cost of a litre of unleaded petrol at 300 of its 1,300 service stations.
On its opinion it reflects a $7 a tonne rise in the international price of petrol in the past three days and a rise in the dollar's value against the pound.
The increase brought most of its cheapest unleaded up to 73p a litre, with a company-wide average price of just over 74p.BP was the only oil company to announce a move when others have quietly made in recent days.
The Asda, Safeway and Morrisons supermarket chains had taken similar action to raise the bottom end of their petrol prices.
The face of USA's First Lady Melania Trump after her handshake with Russian President Putin has received a lot of attention in social media
Moscow is trying to stop Balkan countries from entering NATO. Greece eventually took measures against Russia, even though Greek Prime Minister Alexis Tsipras had earlier said that Russia was Greece's strategic partner
The Ukrainian government refuses to abode by its obligations, rejects a peaceful resolution of the conflict, and disregards its own people, the president said