Arbitration hearing concludes that workers are entitled to increase to match that won by the project’s electricians earlier this year.

Steelworkers on Heathrow Terminal 5 will be paid a £1 an hour bonus after winning a long-running dispute with employers over the issue.

An arbitration hearing has concluded that workers are entitled to an extra £1 an hour, an increase that matches that won by the project’s electricians earlier in the year. The decision is set to fuel unrest among other trades on the site.

The payment, which will be backdated to 6 June, breaks the Naeci agreement that governs pay deals between steelworkers and employers on the site.