Lidl and Tesco in High Court fight over yellow circle logo

Supermarkets Tesco and Lidl are embroiled in a High Court fight over a yellow circle logo (Nick Ansell/PA)

Supermarkets Tesco and Lidl have begun a High Court fight over the use of a yellow circle logo.

German discount chain Lidl says a trademark, and copyright, has been infringed, while Tesco has made a counterclaim.