A Derbyshire man who was injured in a motorcycle accident in Bali is finally responding to treatment almost a year after the crash.
Matthew Taylor, from Swadlincote, suffered a head injury in July 2011 and returned to England last October.
His father Darrell said his son is moving his arms when asked and muttering some words.
His progress is "amazing" and "a testimony to the extent that the brain can repair itself," Mr Taylor said.
Mr Taylor, who was teaching in Bali when he was injured, spent three months in a coma.
"He is showing positive signs of improvement - it is slow but it is progressive," his father said.
"The level of response is there - if you ask him to raise his right arm - he will raise his right arm and there is considerable movement and that is an improvement over six weeks ago.
"Going back a few months ago there was nothing at all. By the time we brought him back to the UK he was in very poor condition."
His family has paid more than £200,000 for medical treatment in Singapore because Mr Taylor was uninsured when the accident happened.