Business on the Move: Tyrells, Investec, Motorola and more

Welcome to The Drum's Business on the Move section, where we collate agency account wins, reviews, agency launches, rebrands and acquisitions.
Agency wins
Tyrrells Potato Crisps has appointed Frank as its retained PR agency after a competitive pitch process.  
Frank will work with Tyrrells on a retained basis from January 2018, overseeing new product launches, consumer campaigns and trade media outreach.
Investec has appointed Leagas Delaney as its le