'We wish they had waited' chefs hit out at timing of Clean Air Zone launch Glynn Purnell has spoken of his concern that the council's Clean Air Zone launch will deter visitors to newly opened city centre venues Updated The video will auto-play soon8Cancel Play now Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice Birmingham hospitality business owners have spoken of their disappointment that the city council has refused to delay the launch of the Clean Air Zone.