Hmmm...
I clicked through on the email link and was given a listing of what the new contract included, which differs in several key areas of the TV that concerned me.
Broadband and landline were fine.
Mega TV instead of Maxit TV, probably fine?
TV360 instead of V6 TiVo, we don't want to change.
No mention of 2nd V6.
No mention of included standard Netflix.
These differences are really dealbreakers, but the original email was clear, Same package, Same speeds, Less hassle.
So although I hadn't clicked the final <accept> button, I then got an acceptance email, confirming the new stuff.
I phoned VM the day after, but spoke with a lady, possibly in India. Very pleasant, but useless.
I think I'll try phoning again and see if I'm lucky enough to speak to someone in Glasgow, they might understand better.