The government’s Investment Summit has suffered a major blow after ports and logistics giant DP World pulled a scheduled announcement of a £1bn investment of its London Gateway container port, following criticism by a member of Sir Keir Starmer’s cabinet.

Sky News understands the Dubai-based company’s investment was due to be a centrepiece of Monday’s event, which is intended to showcase Britain’s appeal to investors and will be attended by the prime minister and Chancellor Rachel Reeves.

DP World’s investment in the port is now under review however, following criticism by Transport Secretary Louise Haigh and Deputy Prime Minister Angela Rayner of its subsidiary P&O Ferries.

In March 2022, P&O caused huge controversy by sacking 800 British seafarers and replacing them with cheaper, largely foreign workers, a move it said was required to prevent the company collapsing.

Announcing new legislation to protect seafarers on Wednesday, Ms Haigh described P&O as a “rogue operator” and said consumers should boycott the company.

In a press release issued with Ms Rayner, Ms Haigh said P&O’s actions were “a national scandal” and Ms Rayner described it as “an outrageous example of manipulation by an employer”.

While Ms Haigh has previously criticised P&O’s actions, the strength and timing of the ministers’ language undermined efforts by the Department for Business and Trade to make the Investment Summit a turning point for the government and the economy.

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Transport Secretary Louise Haigh. Pic: PA

Hundreds of business leaders and investors, including representatives of US private capital and sovereign wealth funds, will attend the event in the City of London, as the government tries to drum up billions of pounds in foreign investment to fund its plans.

The event is seen by Downing Street as an attempt to reset Sir Keir’s premiership after a faltering first 100 days mired in rows about his advisers and acceptance of freebies.

As well as losing for now a £1bn investment in the UK’s key strategic infrastructure, the apparent lack of coordination between ministers will again focus attention on the competence of government operations.

The P&O Liberte ferry leaves The Port of Dover in Kent during windy conditions ahead of the August bank holiday weekend. Storm Lilian is set to surge through northern parts of Wales and England. Gusts of up to 80mph are expected, with travel disruption, flooding, power cuts and dangerous conditions near coastal areas all likely. Picture date: Friday August 23, 2024.
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Ms Haigh suggested consumers should boycott P&O Ferries. Pic: PA

It is understood the decision to pull the announcement and review an investment that has been in negotiations for months was made personally by DP World’s chairman Sultan Ahmed bin Sulayem.

He had been due to attend the Investment Summit on Monday, but will now not travel to London.

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Mr Sulayem has previously refused to apologise for P&O’s actions, saying the summary sackings were a decision made by local management and ultimately ensured the survival of the company and thousands of jobs that were retained.

The £1bn investment was intended to expand the London Gateway facility, adding two new berths to the four that already exist and a second rail terminal. The expansion would have seen it become the UK’s largest port by volume.

DP World generated global revenues of almost £14bn in 2023 and operates in more than 60 countries. It has already invested £2bn in London Gateway, and also owns and operates Southampton’s container port.

A DP World spokesman told Sky News: “The investment is under review.”

Downing Street and the Department for Business have been approached for comment.