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Saturday, January 17, 2026

Data Report Highlights Sector-Wide Impact of ISG’s Sudden Collapse

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The sudden collapse of ISG has sent ripples through the UK construction industry, leaving numerous projects in jeopardy and sparking concern across the sector.

In response, Glenigan has released an in-depth report shedding light on the extent of the impact and the potential opportunities for companies able to adapt to the situation.

The Numbers Behind the Crisis

According to Glenigan’s analysis, ISG had a substantial presence in the UK construction market. A third of its project pipeline was dedicated to public sector work, while industrial, commercial, and private housing projects accounted for over £2.8 billion of its active contracts.

Several high-profile developments have been thrown into uncertainty, including:

  • Fujifilm Diosynth Biotechnologies Facility in Billingham, valued at £200 million
  • Slough Data Centre Campus Phase 2 in Berkshire, worth another £200 million
  • Institute of Neurology for UCL in London, at £158 million

Overall, ISG had more than £2.5 billion worth of projects already on site, with an additional £1.7 billion in the pipeline. This includes 33 contracts awarded, 57 projects actively progressing, and three nearing completion—now all left in limbo. Moreover, ISG’s involvement in 19 construction frameworks, valued at a staggering £104 billion, has further amplified the disruption.

Regional Fallout

Regional impact of ISG's collapse

The collapse has had a particularly strong impact on London, where 24 projects, collectively valued at £1.863 billion, have been halted. This includes two data centre developments, each worth over £150 million, which are now stalled. The effects are not limited to the capital, with businesses across the country facing uncertainty and financial strain.

Glenigan’s regional analysis highlights the significant disruption but also points to the commercial opportunities for agile suppliers to step in. This situation presents a major problem for both contractors and subcontractors, many of which will be left seriously out of pocket, putting a large number of jobs on the line, Glenigan reports.

Opportunities Amid the Uncertainty

Despite the immediate challenges, Glenigan’s data suggests there could be openings for companies able to quickly pivot.There is a commercial opportunity for agile suppliers to step into the breach, ensuring many of these projects do not fall behind and involved subcontractors are supported,Glenigan stated.

While the full extent of ISG’s collapse is still unfolding, it’s clear that the construction industry faces significant challenges in the months ahead. However, for those companies prepared to respond rapidly, there may be room to navigate through the disruption and take on new projects, potentially offsetting some of the broader industry impacts.

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