Even though OS and the UK Hydrographic Office are designated as trading funds (which means that they operate as self-contained commercial entities receiving no direct tax funding), substantial parts of their income - up to 50% in the case of OS - comes from the public sector; meaning, in effect, they are part-paid by taxes. Yet they charge for that data, with onerous copyright restrictions that prevent the re-use of the data.

That restricts innovation and artificially restricts the number and variety of organisations that can offer services based on that most useful data - which our taxes have helped to collect.

Making that data available for use for free - rather as commercial companies such as Amazon and Google do with their catalog and maps data - would vastly expand the range of services available. It cannot make any sense that Google, an American organisation, is presently more popular with people aiming to create new map applications.

For more information visit http://freeourdata.org.uk/