Turns out it was a little server issue on the hosting side :)
"... the server that your domain is based on was upgraded last night with a program which will remove permission problems, this had an unwanted side effect but this has now been resolved and if you check your domain now it should be...
[Solved] Site has disappeared, though still shows normal in Parallels Panel
I keep a simple site for my art portfolio and some misc files hosted with unlimitedwebhosting.co.uk and Parallels Plesk.
Yesterday I noticed that the site and all its contents give a 404 error, and the home page...