Until about a month ago I always checked the results on this computer. Now all I get is 'Cant reach this page'.
Anyone any idea what's gone wrong and how to fix it please?
It might well be a problem with your ISPs DNS server, which is refusing to handle the address properly. (I had a similar problem where my ISPs DNS server wouldn't let me access the website of Sheffield's local newspaper). So it could be worth trying a different DNS server. (If you need instructions, please tell us which version of Windows you're using).