Why has Aldi never opened in Northern Ireland? New supermarket ruling raises fresh questions

Aldi has hundreds of supermarkets across Great Britain and the Republic of Ireland, yet Northern Ireland remains a conspicuous gap in its network — and a new competition ruling involving both Aldi and Lidl has put the reasons for that absence back under the spotlight.

The Competition and Markets Authority (CMA) has provisionally decided that Aldi, Lidl Great Britain and Lidl Northern Ireland should be brought under rules designed to prevent major supermarket chains using land agreements to make it harder for rivals to open nearby.

It comes against a long-running and unverified belief among some consumers that German discount rivals Aldi and Lidl have had some form of territorial understanding concerning Northern Ireland and the Republic of Ireland.

There is no confirmed evidence of such an agreement, and Love Ballymena is not suggesting that one exists.

However, Aldi’s continued absence from Northern Ireland — despite its major presence on either side of the Irish Sea — combined with the CMA’s examination of the rules governing supermarket land agreements, raises legitimate questions about why the retailer has never entered the market and whether access to suitable sites has ever played any part.

Love Ballymena has now put a series of questions to the CMA seeking clarity.

What has changed?

The CMA announced on Friday, 7 August, that Aldi, Lidl GB and Lidl NI should, in its provisional view, be designated as “Large Grocery Retailers” under the Groceries Market Investigation (Controlled Land) Order 2010.

The Order already applies to Asda, Co-op, Marks and Spencer, Morrisons, Sainsbury’s, Tesco and Waitrose.

Its purpose is to stop large supermarket operators using certain land agreements — particularly restrictive covenants and exclusivity arrangements — in ways which make it harder for rival grocery stores to open nearby.

The CMA says the restrictions are intended to protect competition and ultimately give shoppers greater choice over where they buy their groceries and the prices they pay.

Aldi and Lidl were originally excluded from the rules in 2010 because they were classified as “limited assortment discounters”, selling a substantially smaller range of groceries than the established major supermarkets.

The CMA now believes that distinction has disappeared.

It has provisionally found that Aldi, Lidl GB and Lidl NI meet the definition of Large Grocery Retailers because of their store footprints and geographical coverage, the breadth of groceries they sell and their procurement operations.

Aldi’s Northern Ireland question

For Northern Ireland shoppers, the development has an added dimension.

Aldi has established huge supermarket businesses in both Great Britain and the Republic of Ireland but has repeatedly stopped short of crossing into Northern Ireland.

As far back as February 2016, when the company was pursuing major expansion elsewhere in the UK, Aldi specifically confirmed that Northern Ireland was not included.

An Aldi spokesperson told The Irish News at the time:

“Aldi will [be] opening stores throughout the UK however the business does not have any plans to open stores in Northern Ireland.”

No explanation for the decision was provided.

The retailer’s position remained largely unchanged for years, despite continuing to expand its store estate elsewhere.

But there was a notable shift in tone in November 2024.

After marking 25 years of operations in the Republic of Ireland, Aldi said it was “open to exploring opportunities” in Northern Ireland.

The company said it was “very proud of Aldi’s popularity among NI shoppers” and, while confirming there were no current plans for stores here, said it looked forward to “exploring new opportunities in Northern Ireland in the future”.

That stopped well short of announcing an expansion into Northern Ireland, but represented a considerably more open position than its earlier statements.

The Aldi and Lidl theory

Aldi’s absence has long prompted speculation among Northern Ireland shoppers about why one of Europe’s biggest supermarket businesses operates extensively in Great Britain and the Republic while leaving Northern Ireland untouched.

One persistent theory has been that Aldi and Lidl had some form of territorial arrangement or understanding under which Lidl concentrated on Northern Ireland while Aldi concentrated on the Republic.

There is no verified evidence to establish that such an agreement exists or has existed, and it should not be treated as an explanation for Aldi’s absence.

Indeed, Aldi and Lidl compete directly and aggressively across numerous markets, including Great Britain and the Republic of Ireland.

Nevertheless, the CMA’s latest intervention introduces a separate and much more concrete issue: the use of supermarket land agreements.

Until now, Aldi and Lidl have not been subject to the same Controlled Land Order restrictions as the seven supermarket groups already designated as Large Grocery Retailers.

The CMA’s proposed change is explicitly intended to bring the two discounters within rules preventing major supermarkets from using certain restrictive covenants and exclusivity arrangements to make it harder for competitors to establish nearby stores.

That does not mean the CMA has found that Lidl prevented Aldi from opening in Northern Ireland.

Nor is there currently evidence establishing that a Lidl NI property agreement has been responsible for Aldi’s absence.

But it raises a question which has now been put directly to the competition regulator.

Love Ballymena asks CMA for answers

Love Ballymena has contacted the Competition and Markets Authority asking whether it has identified any restrictive covenants, exclusivity arrangements or other controlled-land agreements involving Lidl Northern Ireland.

We have also asked whether any such agreement has prevented, restricted or potentially discouraged another grocery retailer from opening a store in Northern Ireland.

The CMA has further been asked whether Aldi has ever raised concerns with the regulator about access to supermarket development sites in Northern Ireland; whether Northern Ireland was specifically examined as part of its consideration of Lidl NI; and whether any existing Lidl NI land agreements would have to be amended or released if the company is formally designated under the Order.

We also asked whether the regulator has identified any areas of Northern Ireland where grocery competition may have been affected by agreements entered into by Lidl NI.

No evidence Lidl has kept Aldi out

It is important to distinguish what the CMA has actually found from the questions arising from its investigation.

There is currently no evidence presented by the regulator that Lidl has prevented Aldi entering Northern Ireland.

The CMA’s provisional decision concerns whether Aldi and Lidl are now sufficiently large to be subjected to the same land rules as their major supermarket competitors — not a finding that either retailer has breached those rules or prevented the other from entering a particular market.

Indeed, both Aldi and Lidl have indicated that the proposed regulatory change will not affect their respective expansion plans or growth strategies.

What remains unanswered is the more fundamental question that has interested Northern Ireland consumers for years: why has Aldi never opened here?

Aldi itself has never publicly identified a restrictive agreement involving Lidl as the reason, and its previous public statements have generally stopped at saying that it had no plans to enter Northern Ireland.

Its 2024 suggestion that it could explore opportunities here in future leaves the door open — but, almost two years later, no Northern Ireland store has been announced.

Decision expected this autumn

The CMA’s proposals remain provisional.

Stakeholders have until 5pm on Monday 7 September 2026 to submit their views before the regulator reaches final decisions in the autumn. Responses can be submitted to clo2026@cma.gov.uk.

Juliette Enser, Executive Director of Competition Enforcement and Markets at the CMA, said:

“We want everyone to have the best choice of supermarket and range of prices when buying their groceries. To ensure this happens, we put rules in place to prevent big supermarket chains blocking rival stores from opening nearby – and now we propose applying those rules to Aldi and Lidl too.

“This is about allowing shoppers to choose where they spend their money and levelling the playing field for all major supermarkets. Today’s proposals are provisional and we welcome views before deciding the best way forward.”

For now, the idea that Aldi’s absence from Northern Ireland is the result of a territorial deal with Lidl remains exactly that — an unsubstantiated theory rather than an established fact.

But the CMA’s decision to examine Lidl NI’s position under rules specifically designed to prevent major supermarkets restricting rivals through land agreements provides a new reason to ask whether property restrictions have ever played any role in Northern Ireland’s supermarket landscape.

Love Ballymena is awaiting a response from the CMA and will report its answers when received.