@chess010, it's a good idea to start using a free Gmail address, or similar, so that you are not dependent on any one ISP and not affected if you change ISPs.
While many ISPs once promised an email address "for life" this now comes at a price.
Most charge to keep using the full features of email after you leave. So you could subscribe to Talktalk's Mail Plus:
https://community.talktalk.co.uk/t5/Articles/About-TalkTalk-Mail-Plus/ta-p/2374203
That would give you a buffer of time after leaving Talktalk to gradually inform your contacts of the change of address.
Gliwmaeden2, a fellow customer.
