The by-election win for the Green Party - and the heavy defeat for Labour - is "a seismic moment", says Sky's political editor Beth Rigby. Of Sir Keir Starmer, she said we will hear from him later and he will likely say something along the lines of the result being disappointing, but to not read too much into it. She added: "But his party will be reeling from this, they will be despairing - and there will be questions about him and his future." Read the latest: https://news.sky.com/story/