BUDGET retailer Aldi has knocked Waitrose off the top spot in an annual supermarket satisfaction survey.

Aldi was placed first in the in-store category in the survey of 6,800 shoppers who were asked about their experience of shopping for groceries both in-store and at online supermarkets over the previous six months.

Marks & Spencer was placed second, while Lidl was third, with Sainsbury's placed bottom of the in-store survey.

Despite Aldi's stores being described by some in the survey as "untidy" and "a jumble sale" and customers complaining about rushed checkouts, value for money was a key factor in its climb to the top spot.

The German-headquartered discount chain operates 10 stores in Cumbria - three in Carlisle, two in Barrow, and one in Workington, Whitehaven, Cockermouth, Penrith and Kendal.

Supermarkets were ranked in the in-store category based on consumers' feelings about the appearance of stores, queuing time, staff availability, the range and quality of products and value for money.

Waitrose, which had previously held the top position for three years, fell to fourth place.

Separate studies have previously suggested that the "Waitrose effect" of having one of its stores nearby can help to add value to residents' homes.

Which? said customers gave Waitrose a two star rating for its value for money, in contrast to Aldi's five.

Which? said Aldi's special offers rated well, as did the quality of its fresh and own-label products and the ease of finding items on its shelves. It is the second time Aldi has come top in Which?'s annual survey - the previous occasion was in 2014.

Matthew Barnes, chief executive, UK and Ireland at Aldi, said: "We're over the moon to be named the best supermarket in the Which? annual customer satisfaction survey voted for by UK shoppers.

"At Aldi, we're proud to offer fantastic quality products at amazing prices and to be named the UK's favourite supermarket shows just how much we are resonating with shoppers."

Aldi fans loved the supermarket's "fantastic prices" with many also praising an "always improving" selection of food, Which? found.

Meanwhile, in the online category, people were asked about the convenience of delivery slots, the choice of substitute items and drivers' service as well as quality, product ranges and value for money.

Among the online supermarkets, Iceland claimed the top spot for the third year running, which it shares with Ocado for the first time.

Iceland managing director Nigel Broadhurst said: "We are naturally delighted to have been recognised once again as Britain's best online store in the annual Which? supermarket survey.

Asda was placed at the bottom of the online supermarkets table, where Which? said it has been for more than a decade.

Alex Neill, managing director of Which? home products and services, said: "With food costs rising it seems as though shoppers have felt the pinch and are voting with their feet and wallets.

"Aldi and Lidl have won over their customers with value for money, knocking Waitrose off the top spot."

Here are how the supermarkets were ranked by Which? in the in-store category:

1. Aldi

2. Marks & Spencer

3. Lidl

4. Waitrose

5. Iceland

6. Tesco

=7. Asda

=7. Morrisons

9. Sainsbury's

And here is how they were ranked by Which? in the online category:

=1. Iceland.co.uk

=1. Ocado

=3. Morrisons.com

=3. Waitrose.com

5. Amazon Fresh

6. Tesco.com

7. Sainsburys.co.uk

8. Asda.com