(Reuters) -Britain’s CareTech has agreed to be bought by a consortium led by its co-founders for about 870.3 million pounds ($1.1 billion) as the social care services firm opts for its founders’ experience to steer the ship over a rival bidder. Shares in the company jumped about 22% to 745 pence early on Monday after CareTech announced the deal and was trading 21% higher as of 1234 GMT. The offer valuing the London-listed group’s shares at 750 pence apiece in cash was first revealed in April, when Sheikh Holdings raised their bid by 25 pence to match a rival proposal from asset manager DBAY Ad…