For a description of the data in this archive please see:

http://www.oakleywood.org.uk/maps/oakleywood-map-data-description.pdf

These files are are (c) Friends of Oakley Wood and are made available 
under the Open Database License:

http://opendatacommons.org/licenses/odbl/summary/

In summary, you are free to copy, distribute, transmit and adapt the 
data, as long as you credit the Friends of Oakley Wood. If you alter or 
build upon our data, you may distribute the result only under the same 
licence.