Ad Biz | People Park Pictures Signs Manwaring, Opening London Office By Kiran Aditham on Dec. 7, 2010 - 11:11 AM Commercial director Guy Manwaring has signed up with the roster of Park Pictures for U.S. representation. The London native joins from L.A.-based prodco Prettybird and has worked on spots for Warburtons, Specsavers and Snickers bu ...