MH17 Wreckage Ukraine
Men walk past the wreckage of MH17, a Malaysia Airlines Boeing 777 plane, at the site of the plane crash near the village of Hrabove (Grabovo) in Donetsk region REUTERS/Maxim Shemetov

Relatives of victims of the MH17 disaster say it could years to find out who was responsible for the fatal plane crash in eastern Ukraine in 2014 that killed all 298 people on board, including 10 Britons.

At a press conference in the Netherlands, investigators are expected to reveal whether the weapon that downed the Malaysian Airlines MH17 flight was fired from Ukrainian or Russian separatist held territory.

The announcement comes after a two-year probe by detectives from Australia, Belgium, Malaysia, the Netherlands, and Ukraine. With no suspects being named, relatives of the victims say justice may not ever be served.

Jordan Withers, the nephew of Glenn Thomas, a British passenger on board MH17, told the Telegraph: "All I want is to know why, so I can tell my grandkids what happened to uncle Glenn.

"But if you look at things like the Lockerbie bombing, it could be a very long time. If anything I think it is going to be 10, 20, 30 years before something comes out."

Barry Sweeney, whose son Liam died in the tragedy also cited the length of time the inquiry into the Lockerbie bombing took.

"Although I wish someone would be brave enough to put up their hand and said 'yes it was us. "But there were still ten Britons on board, and from a British point of view you want to keep that investigation going," he added.

An air-accident inquiry by the Dutch Safety Board concluded that the Boeing 777 en route from Amsterdam to Kuala Lumpur had been shot down by an SA-11 Buk anti-aircraft missile, which both Russia and Ukraine .

US lawyer Jerry Skinner, who is acting for 33 relatives of victims from Australia, New Zealand, and Malaysia, has already filed a civil case against the Russian Federation and Vladimir Putin at the European Court of Human Rights.

He expects the findings will back his claim the missile was launched from rebel territory and that it was a weapon that could only be used by Russian soldiers, which he believes means the Russian president would be responsible for.

"There is an international principle of law that allows a head of state who authorises military action to be held account," he said, according to The Telegraph.