So far, it has approached at least two London-based agencies with a brief to relaunch its vegetarian frozen meals range following rebranding earlier this year.
The brief is understood to include above-the-line elements, and advertising is scheduled to launch in the summer.
Last June, Hain Celestial bought Linda McCartney's vegetarian empire from Heinz, which was looking to sell off its frozen food business and focus on its core products.
The company, which owns organic brands including Earth's Best and Health Valley, acquired the range with the hope of expanding it throughout Britain, Europe and North America.
Earlier this year, it spent £1 million on revitalising the brand by unveiling fresh packaging and a range of additional ready meals. This followed last year's appointment of the design agency Made Thought, which undertook the rebrand and oversaw the launch of new products.
The Linda McCartney vegetarian meal range was set up in 1991 by the late first wife of the former Beatle Sir Paul McCartney. Its range includes meat-free burgers, pies, sausages and ready meals.