I am not sure where the op is looking but the main alternative number 0345 788 8444 is clearly shown in database together with an alternative freephone which could be used from SKY.
There is already a recent thread here on the subject.Giving
"For your accounts in England / Wales Phone Number - 03457 888 444
(For existing customers)
For your accounts in Scotland Phone Number - 03459 000 200
(For existing customers) "
http://www.saynoto0870.com/cgi-bin/forum/YaBB.cgi?num=1385845001and in this recent thread if its a credit card problem
http://www.saynoto0870.com/cgi-bin/forum/YaBB.cgi?num=1395164582 giving 0370
"Credit Card Services
0370 3339091 (Overseas +44 870 333 9091)
Minicom: 0870 154 1192
Open 24 hours a day.
Calls may be recorded.
Call charge information.
If you have lost your credit card or believe it to be stolen please call the following number:
Accounts in England & Wales:
0370 600 0459 (Overseas +44 1268 500 813)
Minicom: 0800 917 0526
Accounts in Scotland:
0800 056 4386 (Overseas +44 118 373 2674)
Minicom: 0800 0929 098 "
Apart from it being available here, its all available on Nat West site if op looked.