2013 horse meat scandal wing on Health and Safety that pig DNA had been found in halal chicken sausages produced for schools. Horse meat is not normally eaten in Ireland and Britain. According to Professor Reilly, chief executive of the FSAI, "In Ireland, it is not our culture to eat horse meat and therefore, we do not expect to find it in a burger". Silvercrest, a subsidiary of ABP Foods has claimed that there is no risk to the public upon eating the foreign meat. Eleven firms, including Tesco and Asda, said they shared shoppers' "anger and outrage". Whitbread vowed to remedy the unacceptable
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,