Originally Posted by corporate-wage-slave

Welcome to Flyertalk Kurichan, welcome as well to the British Airways Forum. I hope that you have a good trip to Japan. Don't forget to tell us how it goes, we do like to see new members here. Welcome on board.

My guess is that IF there is availability it will be around the £250 mark from WT to WTP. You can indeed ask at any check in desk, but if the agent has a name badge in blue (not silver) then they will definitely be able to do the necessary.

More information in this thread, which is the main home for these sorts of queries.
http://www.flyertalk.com/forum/briti...ng-thread.html