CMS Cameron McKenna and DLA Piper are among a cluster of firms to have complained to the European Commission (EC), arguing local laws governing their right to practise in Bulgaria are against European Union (EU) law.

The group of five firms, which also includes CMS Reich-Rohrwig Hainz, Cerha Hempel Spiegelfeld Hlawati and Wolf Theiss, believe the Bulgarian Bar Act is anti-competitive and against the principals of free trade.