Police say two men threatened a kebab van owner with a metal pole and reportedly made off with cash near the White Swan pub on July 26.
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The robbery took place late on Sunday July 26 on Mansbridge Road.
The men are described as suntanned and in their twenties. One was around 5ft 10in tall, had a shaved head and was wearing a grey zip-up hooded top. The second man was around 6ft tall.
Anyone with information is asked to contact the police by phoning 101, or call the Crimestoppers charity anonymously on 0800 555 111.