Through the media and advertising campaigns, key messages were hammered home. Renewables were intermittent and unreliable. Overseas gas imports were politically vulnerable. “Green” nuclear was the only plausible way to hit carbon dioxide reduction targets.

https://www.theguardian.com/money/2022/mar/06/soaring-gas-prices-are-a-cost-of-this-war-and-britain-cant-avoid-them

Also according to EU research and many other source nuclear is actually “Green”, not to mention that renewables are intermittent by nature and energy storage research that goes for decades got as nothing practical so far.

Also The Guardian is obviously biased on anti-nuclear side; just read this article: https://www.theguardian.com/environment/2022/mar/23/nuclear-energy-push-is-not-powered-by-sense