Japan and Britain signed a memorandum of understanding at Cabinet-level talks in Singapore on Sunday to deepen defense ties in cyberspace and outer space, Japanese officials said.

Under the deal, the two countries are expected to expand ministerial-level and working-level exchanges in such areas as the ensuring of safety in outer space, the safeguarding of nuclear materials, and U.N.-sponsored peacekeeping activities, while working to share information with each other.

With regard to an accord reached between the leaders of the two countries in April to jointly develop defense equipment, Japanese and British officials decided at Sunday's meeting to also cooperate in the research and production phases, the Japanese officials said.