23 Jun 2015 --- Shares in the British chocolate maker and retailer Thorntons rose by more than 42% yesterday (Monday) on the news that it has received an offer from Italian chocolate maker Ferrero for the company. The offer, said to value the struggling company at $178m, comes after a difficult period for Thorntons, which made a profit warning in December 2014 and announced a falls in sales and profits for 2014.