GJR, which has only been up and running for a couple of months, will take the GreenTarget moniker and share clients with the Chicago-based agency. Jackaman becomes chairman of the firm's European operations.
Jackaman's return to PR came after a two-year break (PRWeek, 26 May). He was joined in his new venture by ex-WS Square Mile colleagues Melissa Rowling (the ‘R' in GJR) and Ian Pope.
Rowling becomes GreenTarget managing director of PR, with Nick Glanvil (the ‘G' in GJR) its UK managing director. Glanvil was previously CEO of design consultancy Paufley.
GreenTarget is to specialise in PR and marketing, focusing on financial services and tech.
Jackaman worked alongside GreenTarget founder Daniel Reid at WS, where the latter was financial services practice leader in the UK.
John Corey, GreenTarget president, said many of the agency's US clients had been wanting London-based services.