A DAIRY is offering a £500 reward for help to catch robbers who escaped with cash after threatening a milk round collector at knifepoint.

The masked pair, wearing dark green hooded coats, struck as a 16-year-old female collector and her 22-year-old male colleague were collecting for Greencroft Dairies, in The Bye, in the Grove area of Consett, County Durham. They made off towards the main A692 road.

The girl suffered bruising when she fell while struggling with the attackers and her colleague sustained a minor cut from the knife.

Greencroft Dairies has refused to disclose the amount taken, but it is said to be a six-figure sum.

The suspects were both in their 20s and about 6ft tall. Anyone with information is asked to ring police on (01207) 504204, or the Crimestoppers' freephone line, on (0800) 555111.