I believe it's created by Best for Britain which are legit. It also uses the Survation MRP polls so should be close to accurate / the best source to use to gauge your tactical vote.
Seems strange. Our constituency recently voted for almost entirely green councillor candidates at locals, in Bristol central, so surprised to see them lagging behind labour so quickly. Unless green manifesto and Carla Denyers appearance in debates have swung it so rapidly.
People are happy to vote Green in council elections where they feel the stakes aren't so high. When it comes to running the country they are less inclined to do so (rightly or wrongly)
I believe it's created by Best for Britain which are legit. It also uses the Survation MRP polls so should be close to accurate / the best source to use to gauge your tactical vote.