Advertising agency Mother has announced the return of Mark Harrison following four years at Karmarama.

Harrison will once again take the reins on the Walgreens Boots Alliance account, this time as Global Business Lead.

“Mark is one of the leading experts in retail and the energy and ambition he brings for the brand is a great match for Mother and Boots’ ambitions leading into 2017,” Sara Tate, Managing Director at Mother, told The Drum.

First joining Mother in 2008, Harrison is credited with launching the ‘Here Come the Girls’ campaign for the high-street pharmacy chain. While at Karmarama, Harrison worked across a number of retail accounts including Iceland supermarkets, DIY giant B&Q and Costa coffee.