LONDON, Oct 11 (Reuters) - Britain's Prince Charles says he shares the concerns of Greta Thunberg and other environmental activists that world leaders "just talk" about climate change and were not doing enough to prevent its catastrophic impact.

Climate Change Conference COP26, the heir-to-the British throne, 72, who has spent most of his life speaking out on green issues, said he understood why campaigners took direct action when faced with the inactivity of politicians.

Charles said he understood young people's despair and why groups such as Extinction Rebellion took to the streets to carry out disruptive protests.

Asked if the British government was doing enough, he said: "I couldn't possibly comment.".

However, he said the Glasgow COP26 summit, which runs from Oct.