If you aren't a nominet member sticky me with domain name and I will look into it for you.
They do not have the admin staff to spend weeks chasing up usually uncontactable former registrants just so that they can make £5 for re-registering the domain for an eager would-be registrant.
I recover several detagged domains every day on behalf of original registrants as well as new registrants and if you let me know the domain you're after I can tell you the full position.
It's not a term used for global domain names but it is used for .uk domains:
[nic.uk...]
[edited by: Hunter at 12:22 am (utc) on June 4, 2002]