Based in the London office, she will join the agency's global P&G City team on 1 June.
Prior to joining MS&L, Clarke was a director and partner at Fleishman-Hillard, where she worked on a portfolio of major accounts in the babycare, consumer health, food and retail sectors, including P&G (Pampers, Kandoo and Clearblue), Whole Foods Market, McCain and PepsiCo.
Stuart Wilson, CEO said: ‘With her 11 years' experience of working with P&G, she brings a valuable depth of knowledge that will add to an already impressive team. As an agency we are committed to investing in our clients and ensuring that we deliver excellence across all markets, hiring Louisa underlines this.'
She will report into Kelly Walsh, deputy CEO and MD, consumer.
The EMEA team works for P&G femcare, P&G fabric & home care, P&G hair care, P&G prestige & lifestyle fragrances and on internal communications projects.