The 24 workers from Nepal and Bangladesh, one of whom has died and whose estate brought the case, sued Dyson Technology Ltd, Dyson Ltd and a Malaysian subsidiary in 2022.

The claimants were workers for Malaysian firm ATA Industrial or its sister company and made components for Dyson products.

Their lawyers say the workers had money unlawfully deducted from their wages and were sometimes beaten for not meeting onerous targets, alleging in a lawsuit at London’s High Court that the Dyson companies were ultimately responsible.

Dyson, whose Malaysian subsidiary cancelled its contract with ATA in 2021, denies the claimants’ allegations and argued that any lawsuit should be brought in Malaysia rather than Britain.

Last year, the High Court threw the case out and ruled that the workers could sue in Malaysia.

But the Court of Appeal overturned that decision, saying in a written ruling that London was “clearly and distinctly the appropriate forum” for the cases to be heard.

“This was a procedural hearing to determine where the main case should ultimately be heard,” a Dyson spokesperson said.

“The High Court was right last year in its carefully considered ruling that it should be heard in Malaysia and we disagree with today’s appeal decision,” the spokesperson added, explaining that Dyson was reviewing its legal options.

The company – founded by James Dyson, the inventor of the bagless cleaner – employs around 2,500 people in Britain, including at its R&D centre in Malmesbury, west England, having announced in July that it was cutting about 1,000 jobs.