Mark Greaves is one of two geodetic analysts at Ordnance Survey.
He holds an M.Sc. in engineering surveying and geodesy and is a member of the Royal Institute of Chartered Surveyors.
Greaves specializes in geodetic GNSS computations and analysis. He has worked at Ordnance Survey for almost 25 years during which time he has been responsible for several national GNSS network adjustments, including two internationally ratified realizations of the ETRS89 coordinate reference system in Great Britain.
He also developed the OSTN02 transformation that relates GNSS measurements to the British National Grid.
Greaves has also been in the team responsible for managing and developing the OS Net GNSS network since its inception.