001144
Though your way is better.
(Vice Admiral Sir Charles Cockbrush KCB MBE DSO, who is finding it increasingly difficult to log into b3ta.com wants to duck your aunt and kick your puppy, Wed 9 Sep 2009, 16:55, 2 replies)

Er, not quite...
Technically, the UK country code is +44.
The 0011 part is the code to dial out of Australia, irregardless of the country you are calling.

So, to call the UK from Australia you would dial "001144 [UK phone number less leading zero]".
But, to call the UK from another country it would be something else of the form "[other country's exit code] 44 [UK phone number less leading zero]" and, indeed, in certain countries the exit code also varies depending on the network that you're using.
(Pope Jamiroquai III, Thu 10 Sep 2009, 0:57, closed)

Furthermore...
Sorry to be pedantic, just that this is a subject that seems to cause a lot of people a lot of confusion, so I figured I'd chip in in case anyone reading this inadvertently memorised something that caused them problems later on.
(Pope Jamiroquai III, Thu 10 Sep 2009, 0:59, closed)