However, it could not confirm whether they were the "skulls of beheaded heroes" which President Robert Mugabe referred to earlier this week.
Zimbabwe's leader had demanded the return of those killed by the British in the late 1890s during the first uprising against colonial rule.
He made the remarks at the shrine to remember the country's war dead.
"We are told that skulls of our people, our leaders, are being displayed in a British museum and they are inviting us to repatriate them," he told the crowd.
"We will repatriate them, but with bitterness, questioning the rationale behind decapitating them."
Known as the heroes of the "First Chimurenga", they were defeated by the British after a protracted battle and the ringleaders were tried and hanged.
What happened to their bodies has always remained a mystery.
Zimbabwe's liberation struggle:
The UK Foreign Office has now confirmed that talks have been going on since December 2014 over the "potential repatriation of Zimbabwean human remains".
It said technical experts from Zimbabwe have been invited to meet their museum counterparts in London.
"We await the appointment of the required Zimbabwean experts in order to take this forward," the statement said.
But the BBC's Africa correspondent Alastair Leithead says it is not clear if the remains are of the rebellion leaders.
The Natural History Museum, which has a collection of 20,000 human remains, said it "actively engages in discussions with governments and communities" over requests for the return of human remains.
More from the BBC's Alastair Leithead on Zimbabwe:
Triumvirate retains firm grip on power
The UK's Natural History Museum has said it may hold Zimbabwean human remains in its collection.