Many thanks, I have now deleted all that.
The virus seems to be an attack on and though the WP Supercache folder (in wp-content/cache), all the infected html blog page files are in the cache in that.
Hopefully my hosting provider will now restore url access so that I can run one of the malware search plugins.
And now I have to get Google to un-blacklist it as well :(((( hopefully before the summer !!
Rgds Jonathan