Announcing the pair's release, foreign secretary Boris Johnson said yesterday: 'I pay tribute to the DRC authorities and the Congolese Institute for Nature Conservation for their tireless help during this bad case.
Five Virunga rangers and a staff driver were killed just last month during an ambush in the central sector of the park.
The two freed British hostages said they were "very grateful for the excellent support" they had received.
Two British tourists kidnapped in Congo's Virunga National Park have been released, according the UK Foreign Office.
Johnson paid tribute to DR Congo authorities and the Congolese Institute for Nature Conservation for their "tireless help".
Their vehicle was attacked on Friday in the Virunga national park, a famed haven for gorillas and other endangered species.
Earlier on Sunday, the park confirmed Ms Baraka's death "with deep sadness".
"Following the incident, Ranger Baraka was transferred to a nearby hospital to receive emergency medical treatment".
Park Director Emmanuel de Merode said she showed "true bravery" in her work.
"We wish to extend our sincerest condolences to her family, and our thoughts are with all those affected by this incident". This March two United Nations specialists were kidnapped and killed, while several Catholic priests have also been kidnapped. She was the first female ranger to die in the park, which has now seen 175 killed by the militias.
Located in Congo's North Kivu province, the park is one of the most important conservation sites in the world, covering 7,800 square kilometres (3,011 miles) - three times the size of Luxembourg.
Virunga is home to about one-quarter of the world's remaining mountain gorillas, and the work of protecting them has proven risky.