AUS Westpac Account, can't send money from UK

Hey! Wonder if anyone can help? I'm in the UK currently and need to send some Australian Dollars from an Aussie Westpac account in my name.

My verification number on my phone is my UK number. Whenever I try to send money from that account, I cannot verify - no code is sent to my UK number so it won't make the payment.

Any help much appreciated!