Given that the largest single source for generating electricity in the UK is burning gas, EVs are not zero emissions. Then there's the embedded carbon in manufacturing new EVs, which will take on average about 16-20 years to recoup from reduced driving emissions. Even if all UK electricity was generated from renewables, you're still looking at maybe a decade of driving an EV to recoup the embedded carbon.
Then there's particulates from brake dust and tyre fragments: these cause localised air pollution, and tyre particles are the largest single source of microplastics pollution in our rivers, waterways and oceans.
For all these reasons, electric cars are not the answer. Electric public transport, electric rail freight, these are better solutions. Not private motoring, even fully electric.