Not a chance - there's no way you can support >$600m of net debt on their Aussie business. In FY15 (pre Quindell) they made $121m EBITDA - that's more than 5x leverage.
But UK isn't going to go to zero, there's just no basis for that, so it's not something I'd worry about.
SGH Price at posting:
70.0¢ Sentiment: Hold Disclosure: Held