Just to let you know when I tried to claim the website Google One said “It seems that you have used up all your allocated codes. Please contact your account manager for more information.” I’m not sure who I should be contacting.
Also, it appears to be really difficult to be able to contact Virgin Media. When I sent a text message to a suggested number it wasn't delivered: the number was: +44 7533 051809, yet I've had a text from you on this number before. Has it changed?
Thank you for getting back to me. I had the offer in an email from Virgin. However, having looked into it further I realise I already have a Google One account so that's why I couldn't take up the offer. Silly of me and sorry for wasting your time.