The UK left the EU on 31/01/2020 but is still in transition phase so EU laws apply to end of year.
After that who knows what will happen.
The Canon EWS warranty is 1 year and covers the UK, it also covers non EU European countries so should still be valid after they leave.
From the same EU Website the Guarantee and Returns for England is 6 years and 5 years for Scotland.
How to claim the 2-year guarantee for EU purchases, get a repair, replacement or refund, how to cancel orders made outside shops (online, by phone, mail order).
europa.eu
You want 3 years warranty in UK buy from John Lewis