Turnover at TSL’s parent, Tonroe Group, has surpassed the £1bn mark for the first time, as the company saw a significant jump in its overseas business. “Turnover increased by 27 per cent, profit grew, and we ended the year with a healthy cash position.” “TSL further strengthened its position internationally in the data centre sector in 2025,” Wild said in the company accounts. The profit growth of 14 per cent for 2025 was a significant drop on the 2024 figure which was 59 per cent. The rise in staff numbers meant the overall wage bill was 64 per cent higher at £78.2m in 2025 (2024: £47.6m).