Blocked website
I'm pleased to say that my problem has just solved itself but I'd still be interested if anyone has any ideas.
I've been trying to access the New York Port Authority website to download some statistics and have been unable to access their website from any of four browsers (Explorer, Firefox, Chrome, Edge) from either of my computers (Windows 7 & 10 respectively). Both machines have Norton anti-virus and are linked to my Virgin media router. I've not had this trouble with any other site.
I was able to access the site from British Library machines but not from my local library yesterday. Then just now I've been successful from my home machine.
Any ideas?