Dyson says it will appeal after £150m damages claim rejected by EU court

Case follows earlier legal victory over energy efficiency stickers on vacuum cleaners that firm said misled buyers

Dyson, the vacuum cleaner firm, has said it will appeal against a ruling by an EU court that it is not entitled to 150m in damages over flawed energy efficiency regulation.

Sir James Dyson, the company's billionaire owner, is an outspoken critic of the EU and was one of the most prominent supporters of the campaign to leave the EU.