Jeremy Corbyn, favourite to become the next leader of Britain's Labour party, vowed to "change politics" in his final campaign rally Thursday.

"The inspiration that's been the last 100 days, Saturday is simply one staging point in it," he said of the day when the result will be announced.

"We change politics in Britain, we challenge the narrative that only the individual matters and instead we say the common good is the aspiration of all of us."