Drivers are being warned that "worse is sadly yet to come" on fuel prices after the average cost of filling a typical family diesel car hit £100 for the first time.

Figures from data firm Experian Catalist show the average price of a litre of the fuel at UK forecourts was a record 182.7p on Saturday and 182.6p on Sunday.

That brought the cost of a full tank for a 55-litre diesel car to nearly £100.50.

Petrol prices are also at record levels.

The average price was 172.1p per litre on Saturday, rising to a new high of 172.7p on Sunday.

RAC fuel spokesman Simon Williams said "worse is sadly yet to come" in time for the Jubilee bank holiday, particularly as petrol is now more expensive than diesel on the wholesale market.

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He added: "Due to the rapid rise in the cost of wholesale unleaded, retailers are now taking smaller margins on petrol but larger ones on diesel.

"If the wholesale price of petrol stays above diesel, we ought to see the current 10p-a-litre gap in average petrol and diesel forecourt prices narrow.

"If this doesn't happen diesel drivers will be getting a raw deal, and with prices at these historic highs, every penny matters to drivers."

Fuel prices around Southend have also continued to rise.

Here are some of the cheapest places to fill up in the area according to the latest information on petrolprices.com.

The cheapest places to buy unleaded are:

Asda Shoeburyness Automat - 169.7p

Jet Rochford - 169.7p

BP West Street - 171.9p

Texaco Southend - 171.9p

BP Benfleet - 171.9p

The cheapest places to buy diesel are: 

Asda Shoeburyness Automat - 179.7p

Jet Rochford - 179.7p

Esso Rayleigh Road - 180.9p

Esso London Road - 181.9p

BP Rayleigh Road - 181.9p

Prices correct as of May 30