Maccie Ds were taking beef from Russia - it's how they get their foreign exchange out of the place for their retail operations there....extensive beef farms, low pricing into the UK and Europe and then take the profits at the till in a convertible currency.
I looked at taking a job with their major logistics supplier Perseco (based near Marlow). They probably take some UK beef as a contingency and for the claim too...and there is also the question of where the meat is butchered and prepared - which will be the UK.
After all, plenty of companies do this. Zegna suits come from Mongolian wool, the body made in China and then final stitching in Italy but they claim "Made In Italy" - also brands like Chanel and Gucci make handbags in Korea, finishing them in France or Italy........