"This was an incredibly nasty incident and the staff were very shaken but fortunately unharmed, which is our number one priority.
"We will be offering them any assistance and any support they require after this terrible incident.
"We are also working with the police and hopefully witnesses will come forward to help catch these people."
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Former New Zealand 'All-Black' recounts 1987 win and playing at Franklin's Gardens
Any remaining wintry showers will ease tonight but it will stay cold and there's a risk of frost and icy patches developing.
The snow that's hit the North of England reached this East albeit briefly on Thursday afternoon. Here are some of your pictures.