(Reuters) - French laundry services group Elis SA (>> Elis) sweetened its offer to buy UK peer Berendsen Plc (>> Berendsen) on Wednesday, and the companies said they had agreed in principle on key terms.

The new offer values Berendsen at 2.2 billion pounds or 1250 pence per share, representing a premium of about 45 percent to the stock's closing price before Elis first announced its offer last month.

Berendsen last month rejected a revised, 2 billion pound offer by Elis, saying it did not reflect value being added by a planned expansion.

(Reporting by Sanjeeban Sarkar in Bengaluru; Editing by Sai Sachin Ravikumar)

Stocks treated in this article : Berendsen, Elis