Thanks for your quick and helpful reply Diane. Yes it’s https://www.verulamra.org.uk. I’ve replaced the index.php file and it seems OK now. I’m not really concerned with persuing how it got there just getting rid of it.
I’ve been recieving a lot of bounced spam which appears to have originated from this site and am wondering if it’s related…
Anyway I recall having to edit files in earlier versions of WordPress – which did not impress me at all – that could be something to do with it. I don’t know. I found the upgrade instructions for version 2.1 not as clear as they could be. I was unsure which files I needed to retain. If, as I understand it, upgrades are to be available more frequently then a perhaps a more automated way of handling it could be considered.
Thanks again, Robert