Shares in the Italian-themed restaurant chain, which was founded by TV chef Antonio Carluccio in 1999, gained 42.7 percent to 137 pence, their highest level for over two years, following the approach.
The company said that Landmark, which holds the franchises for Carluccio's in the Middle East and was acting through its investment company C1 Acquisitions, holds or has undertakings to accept the offer from 36.5 percent of Carluccio's share capital.
A spokesperson for the company would not comment on whether London restaurant entrepreneur Richard Caring, who is the company's largest shareholder with a 12 percent stake, was one of the shareholders who had indicated he would accept the offer.
(Reporting by Sarah Young; Editing by Matt Scuffham)
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