Ordnance Survey annual report and accounts 2014-15.
Great Britain.Ordnance Survey.
Stationery Office (Great Britain)
Great Britain.Parliament.House of Commons.
"Presented to Parliament pursuant to Section 4(6) of the Government Trading Funds Act 1973 as amended by the  Government Trading Act 1990."
"Ordered by the House of Commons to be printed 23 June 2015."
"HC 108."
Session 2015-16.