The highest-paid partner at Equistone earned €3.6 million last year, according to the mid-market UK buyout firm’s 2012 accounts, which cover the first full year since the business was spun out from Barclays.

Profits at Equistone LLP are shared among the firm's 36 partner-level staff, among whom the best paid last year received €3.6 million - twice as much as the €1.8 million earned by the best-paid partner in 2011, according to the firm's latest annual accounts filed at Companies House.