Hmm..
Ran my copy of Malwarebytes, came up clean. Checked for update and as one was available I downloaded that and scanned again.
This time it reported two .dll's as infected.
Files Infected:
C:\Program Files\HPZUCI12.DLL (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\Program Files\tls704d.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
These files are both in the HP printer program files.
I did a search of the hard drive and found four copies of tls704..dll, three in the TEMP folder and one in the HP program folder, all four scan as clean.
Printer is also working fine. Not sure if these two aren't false positives.
Just logged onto the Royal Mail site and once again the dial up box appears and the BB is disconnected.