You have been Blind carbon copied (Bcc) on the email to email@example.com; the email envelope is address to you at firstname.lastname@example.org which is why it reached your mailbox.
To manage these emails consider using webmail filter rules to move then from your Inbox to your Spam folder, read more here How do I use filters in Virgin Media Mail?; be aware that you will need to identifying a shared trait to effectively filter such spam.
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.