The UK is to invest £50bn ($85bn) to rescue its major banks, via part-nationalisation. In addition, it will provide unlimited amounts of cash via loans. The aim is to try and unfreeze the UK's banking system, which has been on the verge of collapse. Unlike the USA, there is no disagreement amongst the major parties over the need for the rescue.
In fact, the initial defeat of the US bailout bill last week, seemed to spur a sense of 'this mustn't happen here' amongst UK politicians. A new consensus is also beginning to form about the relative roles of government and markets. As summarised by Michael Skapinker in the Financial Times, this is based on the principle of 'the markets where possible, government where necessary'.