British Army Rank Markings

[hiflier]

I have a picture of a soldier in uniform around the time of Boer War. On the lower left sleeve of his tunic are three chevrons pointing upwards (ie like a sergeant's stripes except the other way up). Below this is an armband with the initials GMP (possibly more letters before the G, can't see round the back). This soldier never rose above the rank of corporal. He was in the South Lancashire regiment. What is the significance of the srtipes?

[Fitzer]

Good Conduct stripe, from Wikipedia "The Good-Conduct stripe was a British Army award for good conduct during service in the Regular Army by an enlisted man. The insignia was a points-up chevron of NCO's lace worn on the lower sleeve of the uniform jacket. It was given to Privates and Lance Corporals for 2, 6, 12, or 18 years' service without being subject to formal discipline"

[dannyk13]

They are long service stripes

[andrew1707]

Could he be a Lance Sergeant: A Corporal fulfilling the duties of a Sergeant?
His rank would still be a Corporal.