Mary Teresa Rainey


MT (Mary Teresa) Rainey co-founded the advertising agency Rainey Kelly Campbell Roalfe in 1993, sold it to Y&R in 1999 and rapidly built the resulting entity into a top-five brand position in the UK. She resigned from her role as company chairman in 2005.

Since leaving advertising, MT has devoted much of her time to building a social enterprise in the digital arena called Horsesmouth, inspired by the potential of new media to create significant public value. Horsesmouth is an online social network for safe, informal mentoring and now has over 45,000 members.

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