Spotted this on the Rambler-Net list. In case you hadn't already spotted this: http://www.bbc.co.uk/programmes/b06b36q3 See also: http://www.ordnancesurvey.co.uk/blog/2015/09/watch-os-on-bbc4-in-a-very -british-map-the-ordnance-survey-story/ Phil (trigpoint)