Complex sentence: The government was opposed by the Labour Party, Lloyd George and his Liberals and the New Party of Sir Oswald Mosley, while within the parties there was particular conflict between the Conservatives and Liberals.
Split into simpler sentences: The government was opposed by the Labour Party, Lloyd George and his Liberals and the New Party of Sir Oswald Mosley. Wwithin the parties there was particular conflict between the Conservatives and Liberals.