Hi @henryrwilson,
Welcome back to our Community Help Forum 🙂
Thank you for making this post regarding your old Telewest Broadband box.
Unfortunately, we are unable to replace your box unless there is a problem with it. I would advise that you do not cut the cable as it is a utility feed. I'm sorry to hear you're thinking of leaving us, please can you give our Retentions team a call regarding this on 150 / 0345 454 1111 - press 1, then 4 and then 4 again to get through to them.
Best wishes,
Serena