Watch: A delighted Bill English is sworn in as New Zealand's 39th Prime Minister

Bill English has been officially sworn in as New Zealand's 39th Prime Minister this afternoon at Government House, 14 years after losing out on the role to Helen Clark.

What a day it has been for Bill English, as he becomes our new PM in a Government House ceremony. Source: 1 NEWS

The incoming Prime Minister snatched the top job when John Key unexpectedly announced his resignation a week ago.

Ms Bennett beams with joy as she is sworn in by Governor-General Dame Patsy Reddy. Source: 1 NEWS

Social Housing Minister Paula Bennett was also sworn in as Deputy Prime Minister. 

Incoming Prime Minister Bill English says he wants to bring a positive force to his leadership. Source: 1 NEWS

A relaxed Mr Key made his final speech as Prime Minister shortly before Mr English was sworn in, and said his advice for the incoming leader is to "trust your instincts".

Earlier today in Caucus Mr English outlined his vision for New Zealand under his leadership.

As Prime Minister you often have to comment on things without perfect information, John Key says. Source: 1 NEWS

"This will be a government supporting economic growth and ensuring that the benefits of growth are widely shared," he said.

"I believe that by supporting families, businesses, volunteers, iwi, unions and churches, government can do a better job of changing lives."

He was upfront about the fact he is a social conservative and that some New Zealanders won't like his views on things like abortion and euthanasia, however he noted on the issue of gay marriage he would vote differently and in favour if he had his time again.