@Anonymous User make sure you're on the UK page and not the Ireland page (the address bar will end in .ie)
If you are on the UK page, switch your router off for a minute and restart it as you may have been incorrectly assigned an IP address from another country.
Hi @Anonymous User
When on the NOW website under the url address bar make sure there is gb in the middle of the url address and not ie (Ireland) or it (Italy).
Also check your IP address is showing a UK location using this website tool below.
Should it say IP unknown or in a different country then try either factory resetting your Router or power down the Router for 30 minutes to let it automatically acquire a new IP address inside the UK.
If you are using a VPN then disable it or set to the UK.