The deaths of four young soldiers at Deepcut barracks is to be dramatised by the playwright tipped to win the critics’ award at the Fringe.

Fiona Evans, whose drama Scarboroughis playing to rave reviews in Edinburgh, said that she would focus on the soldiers’ families and the effect the tragedy had on them.

“Essentially no one knows about what happened on the nights the soldiers died,” said Evans, whose own father served for 22 years in the Royal Medical Corps.

“The action focuses on the parents. By showing the effect of the deaths on close family, people can voice their opinions about what went on.”

Private Sean Benton, 20, and Private Cheryl James, 18, were found dead five months apart in 1995. Private Geoff Gray, 17, died in 2001 and Private James Collinson, also 17, in 2002. All died from gunshot wounds, mostly while guarding the perimeter of the Surrey camp.

Relatives believe that the army and the police were too quick to assume all four were cases of suicide. A review of the investigations concluded in June that they should have been treated as murder.

Evans worked closely with the parents of two of the dead soldiers on the play, which is called Deepcut. Private Gray’s father, Geoff, said: “There are few people in Britain who don’t know the name Deepcut. We haven’t got closure, we haven’t got justice and nobody has been held to account for what happened there.

“The play will keep the everything in the public eye. But it also shows the human side of what we’ve been through, with all its frustrations.”

Evans has received support from the Arts Council of England for Deepcut and it is expected the play will go on to either London or Leeds.