Firm owned by Tonroe Group expecting turnover to exceed £600m this year
Contractor TSL has reported annual turnover growth of 12% in its latest accounts.
The firm, the UK contracting arm of Tonroe Group reported overall turnover of £591.6m in the year to 31 December 2025, up from £526.6m. This follows 77% growth in revenue the previous year.
The firm however saw its pre-tax profit drop 7% from £26.7m to £24.8m. It said its gross profit margin fell from 7.3% to 6% as expected “due to the sector mix of projects delivered.”
The firm said it has secured a strong pipeline of projects and is forecasting turnover of more than £600m for this year.
“The UK business saw further growth in 2025 and remains a highly diversified business unit, delivering across a broad range of industrial sectors. We continued to grow our operational teams across all regions of the UK, with live projects spread across the country and regional headquarters in Birmingham, Leeds, Newcastle, Lymm, Glasgow and Belfast”
The firm said it completed several major projects in 2025, including two projects for Greggs plc, a robotic fulfilment centre in the north east and a data centre project in the south east.
TSL had the highest percentage growth of any firm in Building’s annual Top 150 Contractors & Housebuilder list last year.
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