Tesco has apologised to customers after petrol was put into diesel tanks at the firm's petrol station in Hayes.
A spokeswoman for Tesco said: "We are sorry to the small number of customers affected by this mistake.
"As soon as the mistake was spotted both tanks were taken out of service and we are working with the affected customers to resolve any problems.”
Mark Watson, who represented Tesco in court said the company had invested in "procedures and systems" to correct the problems and insisted the problem was with local management.
A shopper first noticed a mouse in the store in March last year, and reported it to Westminster Council.
The hearing at Southwark Crown Court heard that:
- Mice were found gnawing on pieces of raw chicken which had been contaminated by droppings
- They gobbled ribs, sausages, hot and spicy wings
- Droppings were also found in an aisle of the store close to the pick 'n' mix section
Tesco has been fined £45,000 after a 'super mouse' was discovered in a filthy store in central London, plagued by an infestation of rodents.
The creature, which was twice the size of a normal mouse, was spotted by a horrified health inspector at the Tesco Metro store in Covent Garden where 55,000 customers shop each week.
It's the UK's biggest supermarket chain, with more than 3,000 stores across the country.
But residents in a historic market town in Surrey are adamant that Tesco isn't welcome in their neighbourhood.
The supermarket giant wants to open a new store in Godalming - but today hundreds of people turned out to voice their opposition. Liz Wickham reports.
Residents in a historic market town in Surrey are adamant that Tesco isn't welcome in their neighbourhood.
The supermarket giant wants to open a new store in Goldalming, but today residents are staging a protest march ahead of a public meeting on the issue. They hope to prove that there is a massive swell of feeling against the multinational chain.
Godalming residents who are fighting plans for a new Tesco Express are staging a protest march before a public meeting today.
6,500 people have signed a petition against the store, which locals say is too close to a school.
Jeremy Hunt MP is chairing the meeting at the Wilfred Noyce Community Centre.