the top 10 accounting firm in full (revenue in pounds):
1. deloitte - 27.67bn
2. pwc - 26.81bn
3. ey - 22.34bn
4. kpmg – 18.78bn
5. bdo - 5.78bn
6. rsm - 3.62bn
7. grant thornton - 3.56bn
8. crowe horwath international - 2.71bn
9. nexia international - 2.58bn
10. baker tilly international - 2.42bn