It appears that once the account lapses then that it is that.
What if I want my old Talk21 address back I haven't used for a long time?
Unfortunately, customers who have not accessed their Talk21 account for more than 90 days are no longer able to use their old Talk21 account again, as it expires. homepage at click here
I wonder if checking the account counts? I have rarely used my account but it is checked daily just in case there is mail.