Former Scottish Greens leader Robin Harper joins Labour

Writing to voters in Scotland’s capital city, Mr Harper said: “I desperately want to see the back of this Conservative government, who have crashed our economy, degraded our political life and failed to tackle climate change.

“The SNP, and until recently their Green coalition partners, have also failed to take action on the environment.”

He added: “Labour is the only party with a plan for combatting climate change and harnessing the potential of the green industrial revolution.

“This election provides us with a now-or-never opportunity to remove the Tories from power and end the chaos, failure and inaction that has marked their fourteen years in government.”

Ian Murray, Labour candidate for Edinburgh South, said he was delighted Mr Harper was helping his campaign.

“Robin is one of the most respected parliamentarians of the devolution era,” he said.

“His decision to join the Scottish Labour Party demonstrates that we are the only party with a clear plan to deliver on Scotland’s green potential – creating thousands of clean energy jobs and cutting energy bills for good, with GB Energy paid for by a windfall tax on oil and gas giants.”

A spokesperson for the Scottish Greens said it was a “disappointing” move.

“Labour have abandoned their key promise of £28bn a year in climate investments, doubled down on nuclear power and nuclear weapons, and backtracked on workers’ rights,” a statement from the party said.

“None of these are core green values, so it is really disappointing and sad that Robin has chosen to compromise on those.”