Thanks for the replies. It seems to be one of those strange ones where a specific site is having a problem. I can't get to either wnu.com or epoch.com but can to any other site I try. I'll drop you a note as suggested Messmaster.
I've tried from my phone and can reach it so it's definitely something my end either on the PC or the broadband. Its also from more than one browser so it is probably not browser related. I'll check my ISP has not started blocking them for some reason.