For 14 years until 1996 he was a director of corporate finance at Barings Bank.

He was a Director and Vice-Chairman of Kleinwort Benson Private Bank from 2001 to 2008.

He is currently Chairman of Grimston Trust Ltd and founding partner of the Verulam Consulting group.

Grimston has founded two registered charities: The Friends of St Michael's Church, and The West Herts Environmental Foundation.

This biography of an earl in the peerage of the United Kingdom is a stub.