Bugger - well, usually I don't arrive at NRT with such a tight schedule, so I've not paid attention to such

Thanks for your information, that I may avoid searching in vain when arriving.....
I found some pay-for-facilities here, which I'll check/try out
http://www.narita-airport.jp/en/guid...st/svc_52.html - knowing the Japanese, they'll probably be in good & clean condition.