BRIGHTON, England (Reuters) – British Prime Minister Boris Johnson has behaved like a “tin-pot dictator”, the top legal adviser for the main opposition Labour Party said on Tuesday, after the country’s Supreme Court ruled he had acted unlawfully by suspending parliament.

“Boris Johnson has been called out today by the Supreme Court, the highest court in these islands. He has behaved like a tin-pot dictator,” Shami Chakrabarti said in a statement.

“Boris Johnson needs to reflect on this judgment and consider his position.”

Reporting by Elizabeth Piper and William James