The Northern Ireland Housing Executive's current model has been slammed by a minister who has claimed that it is "unsustainable". Social development minister, Nelson McCausland, has written to the Northern Ireland Assembly to make a number of proposals following a review of the Executive by accountancy firm PricewaterhouseCoopers. The minister wrote: "Whilst the Northern Ireland Housing Executive has had a long history of delivering social housing and has enjoyed the widespread support of North...