THE UK's cheapest supermarket for a weekly shop in September has been revealed - and it's not Lidl or Asda. Which? found German discounter Aldi to be the most affordable out of a list of eight major chains last month. The UK's consumer champion looked at how the retailers' prices compared on a shopping list of 59 products, to represent doing a weekly shop.

The list of 59 included both branded and non-branded items including Birds Eye Peas, Hovis bread, milk and butter. Which?'s analysis also included special offer prices and loyalty prices where possible, but not multi-buys such as buy one get one free. The consumer champion found Aldi came out cheapest ahead of Lidl , Asda , Tesco and Sainsbury's with the basket costing £102.

68. Read more on Retail The supermarket also pipped Morrisons , Ocado and Waitrose to first spot. Asda's basket of 59 goods came in just a fraction more expensive than Aldi, costing £103.

86. Asda was next, with its shopping list costing £112.19.

Tesco's basket, with Clubcard, was £112.96, and without loyalty pricing it was £113.35.

Most read in Money Sainsbury's shopping basket, for Nectar Card customers, was £113.79, then Morrisons was next, coming in at £119.18.

Sainsbury's without a Nectar Card was £119.19, then Ocado and Waitrose came in bottom of the pack, with their baskets costing £125.16 and £130.

37 respectively. Ele Clark, Which? retail editor, said: “Our latest monthly analysis once again sees Aldi crowned as the UK’s cheapest sup.