Welcome to the Accountancy Today Top 30 accountancy and advisory firms for 2025.
Each year, we bring together the latest financial statements and official filings from the UK’s leading accounting firms, ranking them by total revenue. Alongside revenue, we track key performance indicators including headcount, partner numbers, revenue per partner, and other relevant metrics.
Our annual ranking of the top accountancy firms is compiled from this research and may be refined as new information or corrections come to light.
For the most recent reporting period, some of the standout figures are as follows:
Top performers by turnover
PwC remains the UK’s largest firm with turnover of £6.35bn, ahead of Deloitte at £5.68bn. EY and KPMG follow with revenues of £3.7bn and £2.99bn respectively.
BDO reported turnover of £1.02bn, while Grant Thornton and RSM achieved £724m and £543m.
Growth leaders
Gravita recorded the fastest year-on-year growth at 75%, followed by Cooper Parry at 60.4% and MHA at 56.5%.
PKF also posted strong growth of 28.7%, while RSM and Grant Thornton reported steady increases of 11.6% and 11% respectively.
Other notable performers include Moore UK (28%), Haysmac (13.45%), Azets (13%) and Hazlewoods (13%).
Revenue efficiency
PwC generated the highest revenue per partner at £6.35m, far ahead of other major firms.
KPMG and RSM both reported £3.59m, while Grant Thornton reached £2.9m.
BDO and EY recorded £2.19m and £2.2m respectively. Among mid-tier firms, Haysmac posted £1.73m, Crowe £1.72m, and Price Bailey £1.31m.
Employee and partner numbers
PwC remains the UK’s largest employer in the sector, with 33,700 staff and 1,000 partners.
Deloitte employs 27,000 people across 1,369 partners, while EY and KPMG report workforces of 21,136 and 17,000 respectively.
BDO employs 8,000 staff, Grant Thornton 5,500, and RSM 5,420.
Declines and challenges
A number of firms recorded turnover declines over the latest reporting period. These include:
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Deloitte (-1%)
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Armstrong Watson (-5.9%)
| Rank | Firm | Annual turnover (£m) | % change YoY | UK employees | Partners | Revenue per partner (£m) | Report end date |
|---|---|---|---|---|---|---|---|
| 1 | PWC | 6350 | 0.4 | 33700 | 1000 | 6.35 | 2025-06-30 |
| 2 | Deloitte | 5680 | -1.0 | 27000 | 1369 | 4.17 | 2025-05-31 |
| 3 | EY | 3700 | 2.0 | 21136 | 1683 | 2.20 | 2025-06-27 |
| 4 | KPMG | 2990 | 1.0 | 17000 | 833 | 3.59 | 2024-09-30 |
| 5 | BDO | 1020 | 8.6 | 8000 | 466 | 2.19 | 2024-07-05 |
| 6 | Grant Thornton | 724 | 11.0 | 5500 | 250 | 2.90 | 2024-12-31 |
| 7 | RSM | 543 | 11.6 | 5420 | 151 | 3.59 | 2024-03-31 |
| 8 | Mazars | 362.4 | 8.3 | 3469 | 186 | 1.95 | 2024-08-31 |
| 9 | Moore UK | 323 | 28.0 | 2985 | 281 | 1.14 | 2025-04-30 |
| 10 | Azets | 283.7 | 13.0 | 3452 | 382 | 1.23 | 2024-06-30 |
| 11 | MHA | 229.4 | 56.5 | 2442 | 217 | 1.06 | 2025-10-31 |
| 12 | Sumer | 224 | 45.0 | 2350 | 153 | 1.46 | 2025-03-31 |
| 13 | Crowe | 184 | 14.0 | 1600 | 107 | 1.72 | 2025-03-31 |
| 14 | Xeinadin Group | 159.84 | 32.0 | 2234 | 167 | 1.25 | 2025-05-31 |
| 15 | Begbies Traynor | 153.7 | 12.0 | 471 | 2025-04-30 | ||
| 16 | FRP Advisory | 152.2 | 19.0 | 795 | 108 | 1.41 | 2025-04-30 |
| 17 | Saffery | 142 | 14.25 | 1300 | 93 | 1.53 | 2024-03-31 |
| 18 | PKF | 86 | 28.7 | 558 | 46 | 1.88 | 2024-05-31 |
| 19 | UHY Hacker Young | 84.5 | 8.7 | 990 | 96 | 0.88 | 2024-04-30 |
| 20 | Buzzacott | 84 | 17.0 | 600 | 50 | 1.40 | 2024-09-30 |
| 21 | Johnston Carmichael | 75.6 | 4.0 | 829 | 72 | 1.05 | 2025-05-31 |
| 22 | Menzies | 71.3 | 22.07 | 664 | 75 | 0.95 | 2024-06-30 |
| 23 | Haysmac | 68 | 13.45 | 605 | 39 | 1.73 | 2025-03-31 |
| 24 | Kreston Reeves | 49 | 11.0 | 484 | 46 | 1.07 | 2024-05-31 |
| 25 | Hazlewoods | 46 | 13.0 | 395 | 39 | 1.17 | 2024-04-30 |
| 26 | Cooper Parry | 39 | 60.4 | 311 | 133 | 0.29 | 2024-04-30 |
| 27 | Bishop Fleming | 39 | 20.5 | 400 | 42 | 0.92 | 2024-06-02 |
| 28 | Price Bailey | 37 | 16.9 | 378 | 28 | 1.31 | 2024-03-31 |
| 29 | Armstrong Watson | 24 | -5.9 | 470 | 23 | 1.04 | 2024-03-31 |
| 30 | Gravita | 21.3 | 75.0 | 400 | 36 | 0.59 | 2024-04-30 |
Understanding the data
Efficiency variability among firms
There is a notable spread in revenue per partner across the top firms, reflecting varied operational models and market strategies. PwC leads with £6.35m per partner, followed by KPMG and RSM at £3.59m, and Grant Thornton at £2.9m. By contrast, several mid-tier networks, such as Azets (£1.23m) and MHA (£1.46m), show lower figures, consistent with their regional and SME-focused service bases.
Sector resilience and growth
The data shows strong growth across most of the profession, with multiple firms achieving double-digit increases. Gravita recorded the fastest rise at 75%, ahead of Cooper Parry (60.4%) and MHA (45%). Other significant performers include PKF (28.7%) and BDO (8.6%), underlining the sector’s adaptability amid wider economic pressures.
Scaling versus boutique models
Larger firms, such as PwC, Deloitte, EY and KPMG, continue to prioritise scale, client breadth and multidisciplinary services. These models produce high overall turnover but comparatively moderate revenue per partner. In contrast, several smaller firms – notably Grant Thornton, RSM, and Buzzacott – achieve stronger partner efficiency ratios, suggesting a more focused approach to higher-margin advisory or specialist markets.
Workforce and partner ratios
The range in employee-to-partner ratios highlights differing structures and leverage models. PwC employs 33,700 people with 1,000 partners, while Deloitte has 27,000 employees and 1,369 partners. EY, with 21,136 staff and 1,683 partners, operates with higher partner density, reflecting its collaborative and network-driven approach. Smaller networks, such as Mazars and BDO, maintain leaner structures while sustaining steady growth.
Market position and niche focus
Strong growth among firms such as Gravita, MHA and PKF points to the success of targeted strategies in regional markets, digital accounting, and specialist advisory services. These firms appear to be capitalising on demand from mid-market and entrepreneurial clients, differentiating themselves from the Big Four’s broad-service offerings.
Economic impact considerations
The combined turnover of the leading firms underscores the continued strength of the UK’s professional services market. With PwC, Deloitte, EY and KPMG collectively generating more than £18bn in annual revenue, the sector remains a central pillar of the UK economy, driving both employment and expertise across regions.
