Take a good look at this picture and contact South Yorkshire Police if you have any information on his whereabouts.
Nicholas, aged 26, was last seen in the Newman Road area of Rotherham on the morning of Tuesday 21st May.
He was riding a dark blue mountain bike with a grey tool bag with a red stripe fixed to the front of the bike.
It is thought Nicholas went to Thomas Rotherham College Gym after leaving home later that same morning.
No one has seen him since.
He is described as 6ft 4ins tall and of a stocky build, with mousy short straight hair. He speaks with a Yorkshire accent.
Anyone with information that may help trace Nicholas’ whereabouts is urged to call South Yorkshire Police on 101 quoting CX/12321/2013.