The Fletcher House care home in Wells, southwest England, said Patch died early Saturday.
Patch had been the last surviving soldier from the British Army to have served in the 1914-18 war. The only other surviving British veteran of the war, former airman Henry Allingham, died a week ago at age 113.
Patch was called up for service in the British army in 1917 when he was working as a teenage apprentice plumber.
A few weeks later, in one of the bloodiest battles of the Great War, at Passchendaele, near the Belgian town of Ypres, he was badly wounded and three of his best friends were killed by a shell explosion.
Patch's death Saturday severs Britain's living links with "the war to end all wars," which killed about 20 million people.
In recent years he and his dwindling band of fellow survivors became poignant symbols of the conflict.
Last year he, Allingham and Bill Stone - the last British naval veteran of the war
- attended remembrance ceremonies at the Cenotaph in London to mark the 90th anniversary of the war's end at the 11th hour of the 11th day of the 11th month in 1918. The three frail men in wheelchairs laid wreaths of red poppies at the base of the stone memorial.
Stone died in January.
