Six Sigma, developed by Bill Smith in 1986, is a framework that aims to eliminate defects in products and services, so that a business or organization is able to deliver the highest quality service.

Today, the government will lay out its controversial plan to tackle the housing crisis by forcing councils to prioritise house-building on "ugly" parts of green-belt land. Deputy prime minister Angela ...

• Over 5,000 people have signed a petition in just five days against Berkeley’s plan to build around 2,000 homes on green belt land in Bromley • Berkeley says its Ravensbourne Place project would ...