Nightingale (pictured) joined Opinium in 2012 and is an equity partner in the agency.

Her most recent role before her current promotion was research director, and prior to Opinium Nightingale had roles at GfK and Kantar.

Opinium was founded in 2007 and has teams based in London, New York, Amsterdam and Cape Town, with a focus on brand and communications, product, customer, employee and thought leadership.

Opinium chief executive officer James Endersby said: “Huge congratulations to Alexa who has played a significant role in helping us build our agency and its unique people centric culture.

“I’m looking forward to seeing our financial services clients benefit even more with her at the helm.”

Nightingale added: “Our agency has exciting plans for growth across all our sectors, but financial services has and will continue to be one of our heartlands.

“The FS sector has never had such an important part to play in supporting people’s lives, championing businesses and driving growth in our economies, and of course it has never been more regulated and competitive. Our insights support our clients to navigate that environment and thrive.”