2013 horse meat scandal only found more than 1% horse DNA in Asda's tins of but it also contained four ppb of phenylbutazone, marking the first time since the start of the scandal that bute had been detected in a meat product in the UK food chain. However, one problem raised was over documentation; all of the UK animals with phenylbutazone contamination tested in early 2013 possessed a "horse passport" that allowed the carcasses to be sold for human consumption. The veterinary residues committee (VRC) reminded the public in July 2012 that it had been "repeatedly expressing concern" about phenylbutazone contamination. and recent discoveries
Tesco International operations launched in Hungary in 1994 after purchasing a small local supermarket group trading as S-Market based in the North West of Hungary. It opened its first hypermarket in Hungary at the Polus Centre in Budapest in 1996. Tesco operates through more than 200 stores in Hungary with further openings planned. Tesco Hungary also offers a clothing line and personal finance services. In August 2010 opened the first Tesco Extra in Budapest; its name is Tesco Extra Fogarasi and it is located in Zugló, Budapest. The second Tesco Extra opened in Debrecen in 2012. Tesco entered the Polish market in 1995.