Tesco the customer. Such schemes came to light after HMRC litigated against Debenhams over the scheme in 2005. Tesco's expansion has been criticised, and in some cases actively opposed. In January 2013, the British media reported that horse meat had been found in some meat products sold by Tesco, along with other retailers, particularly burgers. Prime Minister David Cameron called this "unacceptable", with products showing 29.1% horse meat in the "Value" range burger, which were supposed to be beef. It was later revealed in February 2013 that some of Tesco's Everyday Value Spaghetti Bolognese contained 60% horse meat. Tesco withdrew 26
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,