The registered address for Another.com is
Another.com Ltd,
One Canada Square,
Canary Wharf,
E14 5DY.
However, the actual trading address is listed on Who-is as
Another.com
PO Box Highgate Studios,
Suite 522,
53-59 Highgate Rd.
London, NW5 1TL
The phone number is given as
020 7813 500 but there are plenty of internet posts which suggest that the phones are never answered.
If you simply need to switch to another free e-mail service (with both web access and POP3 mail through a client such as Outlook Express), I suggest the excellent Gawab. See paragraph 3, et seq, here:
http://www.theanswerbank.co.uk/Technology/Inte rnet/Question407429.html
I'll leave it to others to suggest decent web-hosting.
Chris