"We discussed ideas involving certain details in the sanctions-lifting and nuclear fields that are needed for a deal," Kazem Gharibabadi said in a post on X.
He described the talks as "serious, frank, and constructive", adding that the two sides agreed to continue their dialogue.
"Sides concurred that negotiations should be resumed and to reach a deal, all parties should create and maintain the appropriate atmosphere," he said.
Echoing Gharibabadi's characterization, Christian Turner, Political Director at the Foreign, Commonwealth & Development Office (FCDO), described the session in similar terms, without explicitly mentioning Tehran's nuclear program or sanctions relief.
"UK French & German Political Directors met again with our Iranian counterparts in Geneva today. Talks were serious, frank & constructive. Against a challenging context, we discussed concerns & reiterated our commitment to a diplomatic solution. We agreed to continue our dialogue," .