Nick Clegg will announce that the coalition is to unblock a number of stalled housing developments, leading to the delivery of 48,500 homes in 2013. The deputy prime minister will also pledge £225 million in government funding to assist where "investment is required". Clegg, who will make the announcements in a speech before the National House-Building Council today, will reveal that the UK will grow by 2,300,000 households over the next ten years. Clegg will say: "Last year we managed t...