Edit: It would appear that from around 1715 things have returned to normal. However, if you are still experiencing problems please let me know in a comment below.
There is a problem with server overload at the moment which is, at best, causing long page loading times and, at worst, ‘connection timed out’ errors. I contacted the hosting company early yesterday evening, and again shortly after 9am today, and was told that they were aware of the problem and that their technicians were striving to resolve the issue as quickly as possible.
Had quite a few 502 errors and 500 error messages trying to access today.