I wouldn't expect Virgin Media to maintain your email box for more than a month or two after closing your account with them. How long is it since you transferred to BT? My guess is that your out of luck.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.