Spiegelman (pictured) has 20 years’ experience in marketing and media and is best known in as co-founder and, subsequently, CEO of ad agency Pitch. Earlier in her career, she worked in leadership roles at 20th Century Fox, Warner Brothers and MTV.

She most recently had a brief stint as head of brand studio at Hello Sunshine, the media and digital content business set up by actress Reese Witherspoon dedicated to female storytelling.

Dave Sackman, chairman and CEO at LRW Group, said: “Rachel is a proven executive with the right blend of experience, knowledge and entrepreneurial spirit that fits with the culture and values.  As our company expands its services, it’s critical clients understand the new ways we can work with them. Rachel is the perfect leader to connect those dots for us.”

In the past three years, LRW Group has acquired six companies, including data visualisation specialists Killer Infographics, announced last week. Last year it created a digital analytics practice.