Forgan was one of the signatories of the Mosley Memorandum, which outlined his political vision and soon followed Mosley into the New Party when it was set up. He had officially left the Labour Party on 24 February 1931 and sometime that year co-authored with Adam Marshall Diston The New Party and the ILP (written as an appeal to ILP members). He was appointed to a council for policy and strategy formation that was set up to decide the running of the party and also acted as Chief Whip during the New Party's brief run in Parliament.
Forgan was one of the signatories of the Mosley Memorandum, which outlined his political vision and soon joined Mosley in the New Party when it was established. He had officially left the Labour Party on February 24, 1931, and sometime that year co-authored with Adam Marshall Diston "The New Party and the ILP" (written as an appeal to ILP members). He was appointed to a council for policy and strategy formation that was set up to decide the party's direction and also served as Chief Whip during the New Party's brief stint in Parliament.