Complex sentence: Griffin was a long-standing Conservative Party member, and a councillor for the St Johns Wood Terrace ward on the St Marylebone Borough Council, from 1959 to 1965.
Split into simpler sentences: Griffin was a long-standing Conservative Party member, and former councillor. He served as councillor for the St Johns Wood Terrace ward on the St Marylebone Borough Council, from 1959 to 1965.