Adams, a former private secretary to John Major and Tony Blair, will combine work with Riverside’s existing clients with a focus on new business.
Riverside Communications managing director Dave McCullough said:
“In two years we’ve grown to become a very successful consultancy. But with Mark’s experience in running his own consultancy and growing it into one of the best-known and profitable in the business, I really feel we will go to the next level.”
Speaking on his appointment, Mark Adams said: “Having known Dave for a few years, we had often talked about working together. With Riverside at an exciting stage in its young life, we felt there was much we could offer each other in growing the business.”
Adams is the chairman of the London Chamber of Commerce and in 2011 launched his campaign for higher professional standards in lobbying, Standup4lobbying.
Adams built and sold his own firm Foresight Communications to Lansons in 2010, before leaving a year later.
Earlier this year it was reported by the Guardian that Adams had lost a libel case to the former Conservative Party co-treasurer Peter Cruddas and made to pay £45,000 plus a proportion of Cruddas’ £120,000 legal bill as a result of suggesting that Cruddas had breached the Political Parties, Elections and Referendums Act 2000.