Channel 4 is to host a climate change debate this evening which will focus on how party leaders will tackle one of the key issues for voters in the general election.
But Boris Johnson and the Brexit Party’s Nigel Farage look set to snub the hour-long Emergency On Planet Earth debate.
Labour leader Jeremy Corbyn, Liberal Democrat leader Jo Swinson, Scottish First Minister and SNP leader Nicola Sturgeon, Plaid Cymru’s leader Adam Price and Green co-leader Sian Berry have agreed to take part.
Asked whether a Conservative minister, such as former environment secretary Michael Gove, could attend the Channel 4 debate instead of Johnson, a spokeswoman for Channel 4 News said: “Michael Gove is not the party leader.”
Invitations to Johnson and Farage remained open, the programme said.
The lack of appearance from Johnson sparked Twitter users to promote #BorisTheCoward, which went on to trend early on Thursday morning.