Thompson, who was heading to catch a flight to New York for a meeting with his new boss, Cision chief executive Peter Granat, said: "The first thing to say is that the name is going to stay."
"Gorkana will become a Cision company. It is a brand which resonates strongly in the UK with both journalists and PRs."
Thompson said the immediate aim was to bring together the best of what Gorkana and Cision can do.
He said: "Cision has some of the best technology and we have some of the best data and analytics. Together, we can build a powerhouse by blending the best of these worlds together."
Thompson added that Gorkana clients could expect to access additional products and services via the expertise Cision has acquired and hinted that the parent company had not yet completed its buying spree.
He said: "Cision will be looking to expand the group further through more acquisitions."
Reports suggest Gorkana Group was acquired from former owner Exponent Private Equity by Cision for between £150m and £200m.