Photo: Simon Dell.

Amateur photographer, Simon Dell, captured these two youths in the Shirebrook Valley near Hackenthorpe with his long lens camera this afternoon.

He said: "I thought it was strange as we are miles from Sheffield city centre.

Photo: Simon Dell.

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"The bikes kept locking so they smashed the locks against a fence post to unlock them.

"They were well out of the zone and I have a feeling they will not be going back."

After hiring the bikes using their smartphone, users are asked to keep them within a designated zone which encompasses both universities, the Northern General Hospital and Hillsborough.

They are then awarded points on the basis of how responsibly they use the cycles - and can be banned from using them if they don't follow the rules.

Image: Simon Dell.

A team of marshals operate around the city seven days a week, bringing back bikes that have been left outside the zone.

Ofo, the company which operate the bikes, say the Sheffield scheme has been has been a 'huge success' and will soon roll out a similar one in Leeds.

Photo: Simon Dell.