Finally found some additional information on my Great Grandfather during WW1 - Samuel Morgan b1886 - d1963 for Acts of gallantry in the field

Most MGC military records were burned in fires in 1920s & WW2 So nothing really to find.

-He joined Irvine (TF) RSF Territorial Force in 1913 and enlisted /mobilized into The Royal Scots Fusiliers in 1914 didn't join the war straight away but was later compulsory transferred to the MGC on or about 13/6/1916 Kilmarnock. 19th Coy & 3rd Battalion Machine Gun Corps - (B Company) most likely during the German Spring offensive (battle of Somme) which started in March 1918,

He was awarded Military Medal & Belgium Croix de Guerre, these were presented to him by Irvine Town council - Lord Provost in November 1919. The first newspaper clipping gives some additional info we did not know. He was awarded the Belgium Croix de Guerre for delivering messages under shelled fire when the telephone wires were cut, and he was awarded the Military Medal was special services rendered. He was also captured by the Germans as a prisoner of war, being a good soldier he managed to escape and was able to carry back valuable information to his Officer Commanding.