Pocock joined Baines Gwinner in October 1988 as an executive director, recruiting for the corporate finance and derivatives sectors.
Baines Gwinner said it currently does not plan to fill Pocock's position. His role will be covered by the rest of the investment banking team. He was one of five executive directors.
Pocock said he had not decided what to do next, but that he would probably "become involved in the same line of business as before".