Correctly answer the 1,000 Pound question.
Correctly answer the 32,000 Pound question.
Correctly answer the 1,000,000 Pound question.
On the 1,000,000 Pound question, phone a friend and then answer the question correctly.
Answer every question correctly without ever using a Lifeline.
On the 100 Pound question, use all your Lifelines and then answer the question correctly.