UK and Global Mid-Market Firms Report Strongest Growth in 15 Years — Dentons UK +10%, Withers PEP +26%, Mills & Reeve Crosses £200m

UK and global mid-market firms posted broadly strong full-year results this week. Dentons' UK, Ireland and Middle East arm grew revenue 10% to £336 million — a firm that has grown more than 50% since Paul Jarvis became CEO in 2021, driven by restructuring, regulatory, investigations and banking work. Withers lifted profit per equity partner 26.2% to £903,000 on a 10% revenue rise. Mills & Reeve crossed £200 million in revenue for the first time with double-digit revenue growth. Charles Russell Speechlys recorded 10% firmwide revenue growth to £266.5 million, driven by 8% UK growth and 17% international — though partner profits remained largely flat as the firm invested internationally. Weightmans reported 12% revenue growth and 17% profit growth. Brodies LLP recorded its sixteenth consecutive year of growth with revenue of £138.8 million, up 11%. Legal Futures' Law Firm Growth Report 2026 describes the UK legal market as experiencing its strongest growth period in 15 years, driven by PE investment, M&A activity, AI adoption, and new business models. For CFOs tracking peer benchmarks: the UK mid-market pattern is consistent — topline growth without matching profit gains is the dominant pattern, with revenue growing 10–12% while partner profitability grows more slowly or stays flat as firms invest in infrastructure, headcount, and international expansion. Firms prioritising profit discipline over headcount growth (Withers, Weightmans) are outperforming on PEP metrics.