Winners: China, Russia.
Losers: the West, including Australia.
Biggest losers: the British. (...with the possible exception of Scotland, if they quickly secede and stay in the EU, which they will.)
Potential winners: Northern Ireland - but only if they put aside their religious nonsense, secede, and join forces with EU member Eire. Unlikely, but not altogether inconceivable.
The damage England and Wales have done to themselves is incalculable. Once the mightiest empire the world has ever known, England is now completely fucked. They will be ignored by everyone, including their oh-so-special "friends" the USA.
Putin will seize his opportunity within the next five years. Eastern Ukraine was a useful proof of concept; up next, re-annexation of the Baltic States. A weakened Europe will have no answer.
The USA will wear its heels down with a new Pivot; an emboldened China will respond swiftly, consolidating its nine-point line in the South China Sea and also extending its influence in Africa while nobody's looking.
There might be opportunities for Australia in all this shemozzle. But it would need a combination of vision and deft footwork far beyond yer average Aussie polly. So we're fucked too.