Wheeler, who has 30 years’ industry experience, took up his new role last month and will work across the company’s offices in Birmingham, Jersey and Guernsey.
Lis Lewis-Jones, chief executive officer at Liquid, said: "We have talented teams working on high profile and important clients from a wide cross-section of industry sectors, but it’s important that we continue to look to the future and identify opportunities for further growth. Adrian’s enormous experience, particularly in expanding a business and increasing turnover and profitability, will be invaluable to Liquid moving forward."
Wheeler co-founded Sterling Public Relations, a general practice communications consultancy, in 1976. The company was bought by Grey in 1990.
He continued to work for Grey as chief executive of GCI UK for a further 16 years, as well as chairman of GCI Europe, which grew to a network of 28 regional offices by the end of his tenure.
In addition to his job at Liquid, Wheeler will also continue his other roles as non-executive director of the London Communications Agency and Firefly, as well as a partner at Agincourt Communications and consultant at Gyroscope Consultancy and Best Communications.
Wheeler is also a director of the Speakers’ Corner Trust, an international free-speech charity.
He said: "Liquid is a fascinating company. As far as I know, it is the only mainland agency apart from GCI to include the Channel Islands in its footprint. The consultancy is going places and I hope I can help to accelerate its growth."