Thanks Dave - I had searched Ofcom without success.
I think they have unrealistically limited their observation to those whose MAIN deterrent was loss of email address - I feel sure that it would figure strongly (among other reasons) for a much larger group of dissatisfied users.
I'm amazed that Ofcom should have highlighted that Virgin Media are the ONLY major ISP not offering ANY continuation option (beyond 90-days grace), without requiring them to do so (despite imposing corrections on disclosure to others). Why did they not do so? Why do Virgin think they are exceptional?
I understand the points they make in defence of the practice, but they are really aimed at newcomers, by warning against signing up to their ISP's email service. I also believe that many people (especially younger ones?) see email accounts as transitory. But for those of us who were 'early adopters', there was little email service alternative - no cloud services, and any others were chargeable.
I have been a customer of VM (and its several predecessors) since the cable first appeared in our street some 25 years ago and an ardent supporter (and advocate) of the full fibre approach for most of that period - despite the inevitable service issues from time to time. In fact, although I've been aware of the problems Virgin impose on termination (which also includes the loss of access to recorded TV content - some of which includes our own appearances!) I had not concerned myself as I couldn't imagine wanting to leave.
However, VM's latest invidious changes to pricing and contract terms (as well as a new Smart TV) have brought me to the point of realising that I need to give the recently competitive offerings from other providers a chance, and bite the bullet of change.
I had already read the Which? advice on changing email address (running to 4 fairly dense pages), before seeing the relatively brief summary included in the Ofcom document. It was the scale of that task (I have 2,500 email address book contacts) which drove my concern and objection. [Fortunately I don't have to concern myself with the content history as I keep it on the Thunderbird client on my PC.]
Time to call Virgin to see whether they are prepared to offer enough by way of concessions to overcome my objections!