Thank you for posting on the community forums. I'm really sorry to hear about your situation with your email account.
When you say other accounts have been affected, I'm assuming that you're no longer able to access your My Virgin Media account either? If this isn't the case, you'll need to change your email address password via your online account. However of course if you are locked out of their too, let me know and I'll send you over a PM so I can reset it for you from here.
I'd also recommend using an free online virus scanner to check your devices for Malware. Here are some links to free virus scanners: