Who is Sir Winston Sutherland from Dead in the Water: A Novel and what is their importance?

Sir Winston Sutherland is the minister of justice in St. Marks. Sir Winston wants to become prime minister of St. Marks. It is widely believed that Sir Winston decides to charge Allison in order to further his desire to be prime minister. Stone does all he can to embarrass Sir Winston in the press, but it is the American press and Sir Winston does not worry excessively about that. Sir Winston charges and tries Allison with little to no evidence, but still gets a conviction because of the power he yields on the island and the fear he has over the members of the jury.