OpenStreetMap
Did a super long bike ride from Wakey to Leeds to Weatherby to York, and infilled some missing bridleways along the way between Leeds and Weatherby.
I noticed theres sopme inaccurate NPE derived roads around Manston in Leeds, which I didn't have enough data to fix.
Discussion
Comment from Former OSM contributor on 5 April 2010 at 13:51
NPE maps remember are over 60 years old. With the open data from O.S. now available for us to use, this gives us a wealth of more up to date information.
Comment from chillly on 6 April 2010 at 16:20
New OS data is useful for an area you know. Hand surveying is still far superior because there is much more detail to be found than the OS maps cover.
Comment from Dylan Hayes on 6 April 2010 at 20:59
Will be interesting to see what happens. Not sure what has happened to the dreaded 'derived data' clause in OS data, and how that will impact using newer OS maps.