British Vogue editor-in-chief Edward Enninful has announced he will be stepping down from his role at the top of the fashion magazine after six years.The 51-year-old will take up a newly created role beginning next year as editorial advisor at British Vogue and global creator and cultural advisor to Vogue – aimed at growing the brand globally.The new role was created by Enninful, US Vogue editor Dame Anna Wintour and Roger Lynch, chief executive of Conde Nast, the PA news agency has been told. Enninful told staff in a memo that he had been in discussions with Dame Anna and Mr Lynch about how he can play a “broader role in enhancing Vogue globally”.