geographical accuracy

[Peter Corlett]

On Wed, Feb 21, 2007 at 12:38:54PM +0000, Graham Seaman wrote:
[...]
> Just did; tiny difference, much smaller than the error. I guess this means
> it's my raw data (the northings/eastings) that are a bit off :-( I wonder
> why that would be? I also have the postcodes, anyone have a ballpark
> figure for how much the PO charge for postcode->lat/long tables, and how
> accurate those would be?

If it's for personal use, you should be able to find a knock-off copy.

The PO charge a lot, and the price increases with accuracy. I think the best
one can be used to aim a ICBM right through your letterbox.