I’ve finally received a Delete Button in my email . At some point the Gtalk will turn up in the Inbox – it’s been in my other account for weeks!
Update: As Ray says in the comments..change the setting to US English and suddenly I get the Talk option on the mail page, plus the web clips feed on the same page. Looking in the options I see I can also set From addresses as well as out of office notices. Some nice improvements there.