Given the green light: Chetwood Associates has received planning permission from Islington council in north London for an environment-friendly hotel for the Urban Hotel Group. The hotel, which has yet to be named, is in Clerkenwell's conservation area. It will use recycled materials and have natural lighting and ventilation. The hotel's air-conditioning system will include computer-controlled ventilation that regulates the temperature by controlling the escape of heat through the atrium's glazed ceiling.