Well I have just spoken to VM.
Instructed to do the usual reboot, then (a new one on me) go up 10 channels and then down 10 channels to ch119.
Still nothing.
Informed my call will be put forward to the Tech Team who will be in contact in 2 days time.
Then on the off chance after putting the phone down, I tried the same reboot procedure again...and low and behold it worked !!!
I am happily watching Sharapova

at the Aussie Open on BBC interactive!
Wonder how long it will work for?