Oliver joined Lewis PR, as it was then known, in 1996 as an account manager when it had around a dozen employees at its office in London’s Covent Garden.
He established and headed the agency’s US presence aged 26 with its first office in the States, in San Diego, and later set up Lewis’ office in Los Angeles before moving to Singapore as senior vice president, APAC.
Oliver stayed in Singapore for five years, before moving to Hong Kong with the same role to oversee the acquisition of EBA Communications China. Last October he moved back to London to take his current position.
Oliver said: "I’ve had a fantastic round-the-world journey with the agency; proud that as part of the core team we grew the agency from startup to put it on the global map.
"I’ve been lucky to have had the opportunity to build the business in the US, Asia and EU. But after 20 years I think a change is as good as a rest. I want to apply my global experience into a different organisation, have new opportunities to learn in a different environment."
Regarding his next move, Oliver said: "I am in conversation with both agencies and brands. I’ll take my time to decide what the best fit and opportunity is. I love challenges and I’m looking for my toughest assignment yet."
Lewis is the 28th biggest agency in the world by revenue, according to PRWeek’s Global Agency Business Report 2015. It generated $68.6m (£51.6m) last year, a rise of 12 per cent on 2014.