More than 100 banks and specialist brokerage firms offer corporate broking services to companies ranging from tiny stocks listed on Aim to the biggest companies in the FTSE 100. Here, Financial News profiles the UK’s 10 most important corporate brokers, ranked in order of the number of FTSE 100 clients that use their broking services.

JP Morgan Cazenove Status: Top dog Key people: David Mayhew (chairman) and Charles Harman (head of corporate finance) Number of FTSE 100 clients: 35 Top mandates: BT, 3i, London Stock Exchange, Rio Tinto, Tesco