You can check how much renewable energy is being utilised for electricity generation in the UK national grid
here.
I've seen this as high as 80% and as low as 5%. The 10% from nuclear is constant as nuclear stations are not easy to stop and start. The average for the last year was 26% renewable.
This is renewables in electricity generation which is approx 30% of the UK energy consumption. The rest is transport, industry and agriculture which is over 90% from fossil fuels.
So we have 26% of 30% of all energy from renewables - so very roughly 7% from all the wind farms, solar panels and other renewables.
Extrapolating that we would need 14 times more solar and wind farms to cover all of our needs from renewables which is both unlikely and not planned.
The UK Net Zero 2050 plan includes several assumptions about things like CCSR (carbon capture storage and reuse), a reduction in meat production and consumption and other efficiency measure and carbons sequestration.