Forecourts have failed to pass on the fuel duty savings announced by the Chancellor at the spring statement, according to new data.

Petrol prices have fallen just 2.71p, and diesel down 1.59p, despite Rishi Sunak saying a 5p fuel cut comes into effect from 6pm on Wednesday, research from The AA found.

Average pump prices across the UK show petrol averaged 164.59p a litre and diesel at 178.72p a litre after the fuel duty cut came into force.

Prices range from 156.9 to 186.3 in Slough for unleaded petrol. As of March 26, the cheapest pumps are:

1. Asda, Telford Drive: 158.7p

2. Tesco, Brunel Way: 161.9p

3. Shell, Clarence Road: 161.9p

4. Shell, London Road: 162.9p

5. Esso, High Road: 162.9p 

Mr Sunak said fuel duty would immediately be reduced by 5p, worth 6p once VAT is added, until March 2023.

Drivers have faced record pump prices since Russia’s invasion of Ukraine led to an increase in the cost of oil.

The Chancellor promised to alleviate the burden on motorists by announcing the biggest reduction to fuel duty rates “ever”.

He told MPs on Wednesday: “Today, I can announce that for only the second time in 20 years, fuel duty will be cut.

“Not by one, not even by two, but by 5p per litre.”

The RAC criticised the Chancellor for not going far enough, with head of policy, Nicholas Lyes, describing the cut as “a drop in the ocean” as it will “only take prices back to where they were just over a week ago”.

While Mr Bosdet said we have to accept that, for many forecourts, the duty cut will come through with the next delivery of fuel, he agreed the size of the fall is very disappointing.