Criticism of Tesco summer 2012 according to a leaked document. Ready packed meal firm Findus, Compass Group was the world's biggest catering firm at the time, and Whitbread, which was Britain's biggest hotel group, were indicted for illegally selling concealed horse meat in food products. Compass Group had sold it to 47 Lancashire schools and a "small number" of schools in northern Ireland. As a result, Tesco dropped in market value by Wednesday 16 January 2013. Tesco, the Co-operative Group and Aldi also decided to cancel contracts with ABP Food Group because of the adulteration. In a public letter later that day, 11
Tesco biofuels, offering petrol-bioethanol and diesel-biodiesel blends instead of pure petrol and diesel at their petrol stations, and now offering Greenergy 100% biodiesel at many shops in the southeast of the United Kingdom. In 1998, Tesco and Esso (part of Exxonmobil) formed a business alliance that included several petrol filling stations on lease from Esso, with Tesco operating the attached shops under their Express format. In turn, Esso operates the forecourts and sells their fuel via the Tesco shop. As of 2013, there were 200 joint Tesco Express/Esso sites in the UK. In 2018, Tesco launched a separate budget chain, Jack's,