[5] In 2012, it launched a breast cancer awareness campaign for the Scottish government featuring Elaine C Smith.
[11] The Leith Agency was voted Scotland's top advertising agency in 1993 in a poll for Scotmedia magazine[12] and in 2001, it won the Scottish Institute of Practitioners in Advertising award for most effective campaign for promoting now-defunct radio station Beat 106.
[13] The Agency has created campaigns for global brands such as Honda, Grolsch and SEAT from its offices in the docks of Edinburgh.
[16][17][18] In August 2020, The Leith Agency as part of its holding company, Cello Health plc.
(formerly Cello Group) was sold to Pharma Value Demonstration Bidco Limited, a newly incorporated company wholly owned by Value Demonstration UK Holdings Limited, a company backed by Arsenal Capital Partners V LP and Arsenal Capital Partners V-B LP, following acceptance of a recommended cash offer by the company shareholders.