On June 21 at 10.20pm, a 19-year-old woman was walking along Barnsley Road in Brampton Bierlow.
It’s alleged that a drunk man approached her, slapped her bottom, grabbed her breasts and attempted to put his hands down her trousers.
He then followed her for approximately a kilometre.
A police spokesman said: “The man we’re looking to speak to is thought to be around 5ft 7in / 5ft 8in tall, skinny build with dark hair.
“Do you recognise him? If you think you might know him, please call 101 quoting investigation number 14/95303/19.”