Two bar staff have been left shaken after an aggravated robbery in Nelson.

Two female workers were closing up the Ocean Lodge bar around 10pm yesterday when a man forced himself inside.

Police say he was aggressive, pushing one of the women and verbally threatening both while demanding cash.

An undisclosed amount was handed over, and the man took off towards Beach Road.

He's described as having brown skin, of very solid build, and was wearing a grey sweat top and pants.