You are in luck! Part of your Albert Henson's service record is on Ancestry.
Looks like he knocked a few years off his age to join up, as he declares himself to be only 33 yrs & 312 days old on enlisting on 14 Nov 1914.
He was Private (no. 19109) in 12th (Pioneer) Bn The Sherwood Foresters (Nottinghamshire & Derbyshire Regiment).
He served with them in France & Flanders from 3/11/15 until 22/8/16, when he was wounded (GSW right forearm) and repatriated. He was discharged "no longer physically fit" on 9/2/17.
His next-of-kin information proves he is your man, as it lists his marriage to Cecilia Bradder at St John's, Mansfield, on 3/12/10 and the births of Herbert 16/1/11, John Charles 10/1/13 and Winifred ?Cecilia (date illegible). Home address 93 Ratcliffe Gate, Mansfield, on enlisting, and 61 Branlow Rd, Mansfield, on discharge.
http://1914-1918.net/notts.htm12th Bn were in 24th Division:
http://1914-1918.net/24div.htmYou wrote: "in Ypres in WW1 and that he stayed around the Cloth Hall in Lakenhalle"
The Cloth Hall was in the centre of Ypres. Lakenhalle is the Dutch/Flemish word for Cloth Hall.
http://en.wikipedia.org/wiki/Cloth_Hall,_YpresAdrian