![Ground staff gather at a picket line near Heathrow's Terminal 2 last month, with warning of more strikes in place. Getty Images](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/5QELT44YZFIWLOWAW4LEBSTBUQ.jpg?smart=true&auth=db423dbcb7f1f2e09c4c0327886b5a195eb4eefbce64c3d919e4520d033e566b&width=400&height=225)
Ground staff gather at a picket line near Heathrow's Terminal 2 last month, with warning of more strikes in place. Getty Images
Ground staff gather at a picket line near Heathrow's Terminal 2 last month, with warning of more strikes in place. Getty Images
Heathrow passengers told to 'brace for disruption' of coming strikes
About 400 ground-handlers will walk out on Friday, with more protest action planned this month