Supermarket giant Aldi claim you can do your shop '40 per cent quicker' at their stores - which may not surprise anyone who's seen how fast their checkouts move.

The store is infamous for having speedy cashiers, but that's not the only reason why Aldi says it's the fastest.

Aldi's communications director Richard Thornton says there are a whole range of little differences that all add up to saving time.

From the way the store is laid out to the packaging of items, there's a host of measures the firm says are designed to help you get your goods home quicker.

We've looked at what those reasons are in more detail below, but what might surprise the chain is not everyone loves the speed - particularly those nippy cashiers.

Shoppers have given their top tips

SHOPPERS DAZZLED BY ALDI SPEED

One shopper had a simple idea for slowing the process down - just ask - but even that divided opinion.

Writing on Facebook, the Aldi customer said: "You can ask them to slow down, I do. They don’t mind. And never had a rude checkout operator either."

Simple, right?  She certainly had her share of supporters.

One replied: "I always ask the checkout workers at my local ALDI to slow down a bit, so I don’t get overwhelmed."

Another wrote: "They always say yes and it’s always very pleasant, never had a problem."

A petition was even launched to the government two years ago to make the checkout lanes slower.

It called for the budget supermarket to slow down its ultra fast scanning to ''make it easier for us to pack items''.

The petition read: ''It's a common experience now to be rushed at Aldi while cashiers launch our food items through at a rate we can't keep up with and then ask us for money while we are scrambling to organize a huge pile of food in time.''

Aldi checkouts are famously quick

But the effort was rejected by the Government, however, because ''it's about something that the UK Government or Parliament is not responsible for''.

Others argue asking cashiers to slow down completely defeats the purpose of why many people choose Aldi.

"So many people have said it already, but you shouldn't be asking them to slow down - just put it back in the trolley/basket and pack it at the shelves opposite," Eden Cady-Mckellar wrote.

"Aldi and Lidl are cheap for a reason - if you don't like it; don't shop there."

For those who aren't ready to slow down, there's a Facebook page called the 'Aldi Checkout Challenge', where shoppers share tips on how to keep up.

One fan wrote:  "Placed a number of items on the checkout belt and strategically placed carrier bags amongst the shopping (front and middle. The bags came along just in time for the previous one to fill up.

"When it came to paying, I had one bag left to fill. Opened the bag, inserted card into the machine, carried on filling said bag, inserted pin when requested, finished filling bag and placed in the trolley, just as card reader said “Please take card”.

"Was a successful trial run which I think could be a happy middle ground between us and the Checkout Speed Demons."

A government petition was even launched to reduce the speed at checkouts

FIVE REASONS WHY ALDI SHOPS ARE SO FAST

1. Speedy checkouts

Checkout staff are quick with ringing your groceries through the tills, meaning the process takes around 40% less time than at other supermarkets, Aldi claims.

The biggest reason for rapid scanning is to keep product prices and staff numbers as low as possible.

As discussed above, this approach divides opinion but going through the till can be quicker than self checkout.

2.Bar codes

The speed at the tills is thanks, in part, to the design of Aldi’s packaging.

Most products at regular supermarkets have the barcode in one place – meaning checkout workers have to turn it around a few times it before sliding it over the scanner.

But at Aldi, all products have multiple barcodes on every side of the packaging, which make them quicker and easier to scan.

On canned foods and small packets and cartons, the barcode goes almost right the way around, so they can simply be rolled across the scanner with a guarantee the code will be picked up.

Stores have very similar layouts

3. Designated packing area

You may have wondered what those big shelves near the tills at an Aldi store are there for.

Customers are expected to use them to pack their bags, but there's more to it than that.

The layout of the checkout area is designed so customers put items straight in their trolleys, before packing them at a dedicated area towards the back of the store or at their cars.

This ensures that the checkout is clear quicker for new shoppers to use, and that checkout colleagues can scan more items.

4. Exclusive product range limits your choice

Decisions, decisions. The time spent trying to choose between different items and brands – or working out which one is better value – soon adds up.

Aldi stocks around 2,000 carefully selected product lines, compared with the 40,000 that can be found in other supermarkets, with very few duplicates.

For example, Aldi stocks only one variant of tomato ketchup vs other supermarkets who have 20 or so.

The idea here is that too much choice slows you down.

There's no confusing offers

5. Stores have similar layouts

You may not have noticed, but all Aldi supermarkets have a similar layout, meaning you’re more likely to know where everything you’re looking for is located.

So, when visiting a new supermarket, you don’t have the confusion that comes with products being in an unfamiliar – and often not at all intuitive – place.

This is because distribution centres are also laid out in the same way as stores, so products are delivered on shelf-ready pallets that go together in the order you find them in store and it’s easier for store team members to get stock onto the shop floor.