Project Four Building Safety Experts (P4) has reported that annual turnover is up 53.6% from £2.83 million in 2024 to £4.35m in 2025, driven by rising demand for Building Safety Act consultancy and growing repeat work. 

The firm says expansion of its national technical team and its focus on practical compliance advice have helped it win bigger mandates across the UK. 

Now in its ninth year, P4 operates from Liverpool, Manchester, Leeds and London, with Birmingham next on the roadmap for 2026. 

The business has more than 200 active clients and a target of £11m turnover by 2030.