Upon his return he spearheaded the attack on the Congress Party and became the preeminent force in the Muslim League.  
After studying law at Lincoln's Inn he worked diligently in the campaign of Dadabhai Naoroji [DA-du-bye NOW-roh-jee], who thus became the first Indian to sit in the House of Commons.  He led his side in signing the Lucknow Pact, but would return to London in frustration between 1930 and 1935.  Upon his return he spearheaded the attack on the Congress Party and became the preeminent force in the Muslim League.  FTP, identify this separatist, the first governor-general of Pakistan.
After studying law at Lincoln's Inn he worked diligently in the campaign of Dadabhai Naoroji
Muhammad Ali Jinnah