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Prime Minister Sir Keir Starmer during an 'In Conversation' event with Debbie Weinstein, managing Director Goole UK&I during the Labour Party Conference at the ACC Liverpool.

Liverpool, ENGLAND — U.K. Prime Minister Keir Starmer insisted on Tuesday that tough decisions taken now will spark a new era for Britain, as he sought to shake a fog of pessimism that has clouded his new premiership.

"Change must mean nothing less than national renewal," he told a crowd of Labour Party delegates Tuesday.

"The truth is that if we take tough long-term decisions now, if we stick to driving purpose behind everything we do ... then that light at the end of this tunnel, that Britain that belongs to you, we get there much more quickly," he said at the close of Labour's annual party conference, its first in power for 15 years.

Starmer lambasted the previous Conservative government for decimating public services and destroying trust, insisting that politics could be a "force for good" as he outlined Labour's plan for progress.

"We must build a new Britain. We must be a great reforming government," he said.

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