Britain today generating 90%+ of electricity from renewables

https://grid.iamkate.com/

National Grid: Live

Shows the live status of Great Britain’s electric power transmission network

These titles are misleading, they always omit the rest of the grid and the final carbon footprint.

In March, the UK emitted 161g CO2/kWh.
France did 6 times less CO2/kWh with 2x less renewables !

https://app.electricitymaps.com/map/zone/FR/12mo/monthly

France | Electricity Maps

Track real-time and historical electricity data worldwide — see production mix, CO2 emissions, prices, cross-border exports, and much more.

France has much more nuclear. You can argue that is better but even if you agree it would take decades to get there.