Tesco Ireland with uncooked mince. In May 2012 it pleaded guilty to selling "gone off" (decayed or rotten) meat and the next month was prosecuted and fined for breaches of consumer law. The Food Safety Authority of Ireland found horse meat accounted for approximately 29% of the meat content in beef burger products from Tesco in January 2013. In 2007, Tesco Ireland announced that it would be providing brand new uniforms to take over from the ten-year-old previous uniforms. The new brand includes brand new Dell Computers for File Maintenance Control rooms and floor staff workstations. In July 2008 "Tesco Cash Savers"
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,