A LONDON hospital was brought to a “standstill” today as unpaid agency workers made another challenge to ISS over their pay cycle changes.

The Star understands that a mass grievance of GMB members took place at Princess Royal Hospital in Orpington against the management of subcontracting giant ISS.

A source close to the workers told the Star that 22 workers attended the meeting, and that management tried to force some of the workers to return to work.