Japan will support Britain in joining the Trans-Pacific Partnership accord as both countries seek to promote free and rules-based trade, economy revitalization minister Toshimitsu Motegi said Tuesday.

During talks in Tokyo, British International Trade Secretary Liam Fox expressed Britain's desire to join the TPP, and Japan offered to provide the necessary information and act as an intermediary, according to Motegi.

"Your expression of interest is a great encouragement to our efforts to attach importance to a free trade system based on rules and to fight protectionism," Motegi said at the outset of the talks.