Analysis from estate agents Savills compared house prices in the postcode district where Waitrose stores have opened over the past five years to the average for the whole county.

It revealed that house prices near the upmarket supermarket are on average 25% more expensive, with the biggest premium in London at 50%.

Premiums in the North of England stand at around a third, while more rural regions, such as the South West and the East of England have a much smaller premium, due in part to higher average values overall.

In London, although Waitrose hotspots are linked to house prices that are 50% higher than the Greater London average, a closer look shows a more diverse picture. Three quarters of the capital’s Waitrose stores are located in postcode districts where house prices are significantly higher than the London average. At the extreme, for a prime central London store location, house prices are more than three times the London average.

The top 20 locations enjoying a Waitrose premium all have house prices at least 40% above their local county average. Nine out of the top 20 are in London, while the Cheshire wealth belt features in the list four times, with Altrincham ranked highest with a premium of 107 per cent, suggesting house prices around double the county average.

Sophie Chick, Savills research analyst, said: “Our analysis identifies a very clear house price premium in Waitrose store locations. It’s difficult to state with certainty that a Waitrose store opening will boost prices, but it is clear that buyers should expect to pay significantly more for their home if they wish to have a Waitrose store on their doorstep.”