The 2G network will continue for a long time to come

It’s already gone in North America. China is aiming for 2025 (or already gone, depending on which Google result I click), and and it was gone in Japan a long time ago. Nissan sells more cars in each of those three markets alone than all of Europe. And 2G is already gone in many European countries. It makes no sense for them to keep it just for the UK market.