UK Ordnance survey coordinates and Geocoding anyone ?

[Ken Starks]

Has anyone written a python wrapper around the (Windows) dll
for converting between OSGB36 and ETRS89 coordinates ?

The dll and an application are available from http://www.qgsl.co.uk as 
long as you register.

Information, if you don't know what I'm taking about:
-----------------------------------------------------

OSGB36 is the system system used on Ordnance survey maps, 'Eastings, 
Northings, and 'Height above sea level' (normally Newlyn).

ETRS89 is the European variation of the standard Sat-Nav coordinates
(GRS 1980) adjusted slightly to account for the continental
drift of the European Plate away from the International average. You
get 'Longitude' 'Latitude' and 'Height above the Ellipsoid.

The Ordnance survey now __define__ OSGB36 in terms of ETRS89 and the 
algorithm implemented by the 'Grid Inquest' dll. Goodbye (most) Trig 
stations and Benchmarks!

For an example of an OS map centered at a 1 metre accuracy gridpoint,
(Buckingham Palace) go to:
http://www.magic.gov.uk/website/magic/opener.htm?startTopic=maggb&xygridref=529115,179711&startScale=2500