In a significant development in the UK property market, shareholders of Segro, one of the largest property companies listed on the London Stock Exchange, have approved a £14.3 billion takeover by the American logistics firm Prologis. The deal, finalized on Monday after months of negotiations, marks the largest acquisition on the London Stock Exchange in 2026 amid a surge of high-value bids for major UK companies this year.
Segro owns approximately 10.9 million square metres of commercial space across the UK and seven other European countries. The company traces its origins back to the early 20th century when Sir Percival Perry, Sir Noel Mobbs, and Redmond McGrath purchased a 600-acre site in Slough, west of London. The land, once a dumping ground for military vehicles following the First World War and locally nicknamed “the dump,” eventually became the Slough Trading Estate and laid the groundwork for Segro’s extensive industrial and commercial real estate portfolio.
Over the past century, the Slough site has played a notable role in British industrial history. Early tenants included Citroën and Gillette, while the estate also gained recognition as the birthplace of the Mars chocolate bar in 1932 and as the manufacturing site for the Ford GT40 in 1964. The estate was even used as a filming location for the television series Thunderbirds during the 1960s. At roughly 390 acres, it became the largest single-ownership trading estate in Europe. However, by the 1990s, industrial shifts saw many companies relocate eastward, prompting a period of strategic reassessment for its owners.
David Sleath, who became Segro’s chief executive in 2011 after joining as finance director in 2006, is credited with leading the company’s transformation. Under his leadership, Segro pivoted away from traditional warehousing and retail properties toward industrial facilities and data centres, capitalizing on the growth of online retail and digital infrastructure. His strategic shift positioned Segro as a major operator of data centres in Europe and enhanced the value of its property portfolio.
A key asset underpinning Segro’s attractiveness to Prologis is its Slough industrial estate, which represents about 8 percent of Segro’s total holdings. The site benefits from significant connectivity due to transatlantic fibre-optic cables running beneath it, linking London directly to the United States and making it an important hub for data centre development. Industry experts rank Slough as the world’s second-largest data centre hub, trailing only Virginia in the US.
The takeover price rose from an initial offer of £12.6 billion in June to the final £14.3 billion after multiple revised bids, reflecting confidence in Segro’s long-term development pipeline. Segro’s directors have suggested that the company’s portfolio could be valued as high as £17.8 billion within the coming years. The acquisition highlights ongoing consolidation trends in the property sector and has drawn attention to the broader health and trajectory of the UK capital markets amid a series of high-profile corporate deals in 2026.
While Slough’s reputation has long been shaped by unflattering cultural references, its evolution from a post-war military junkyard to a cornerstone of Europe’s digital infrastructure underscores a dramatic transformation in its economic and industrial significance. As artificial intelligence and data-driven technologies continue to expand, the value of sites like Segro’s Slough estate is expected to grow further, reinforcing its position in both the UK and global markets.