The dialling code from UK to Australia is 00 61.
Australia uses country code +61, dialled as 0061 from the UK.
If you are calling from a UK mobile to Australia, dial 00 (international prefix from the UK) 61 (country code for Australia) and then the Australian number, dropping the leading 0 To call from Australia to a UK mobile, dial 0011 (international prefix from Australia) 44 (country code for Australia) and then the UK mobile number, dropping the leading 0
You do not need a special code. Both area are part of the UK and share the same phone number system.
0061 2 then local area code
Country code +61, area code 8, which is dialed from the UK as 00 61 8
Dial the International Access Code (00 from the UK). Dial the Country Code (353 for Ireland). Dial the Irish Area Code and Local Number. OMIT the initial zero from the area code.
Replace the leading 0 of the Australian number with 00 61, or with +61 from a mobile.
The International dialing code for Melbourne Australia from the UK is... 00613 then the persons number.
Country code 0061 (for Australia) - followed by 7 for Brisbane, then the subscribers number.
Dial 011 44, then the full UK phone number minus its leading zero. For example, UK number 01632 456789 (or +44 1632 456789) is dialled as 011 44 1632 456789.
There is no "secret code".