Just started the survey and I think there is a lot of mis-understanding as to what an "Open" certificate is.
My very first certificate was Open in that it had no conditions other that the four pre-printed conditions. In other words you could use any calibre rifle for any purpose anywhere.
Certificates nowadays are restricive - some more/less than others.
If the certificate has a condition that states .... 0.243 calibre rifle for deer stalking .... or .... on land over which the holder has lawful authority to shoot ... then it is a conditioned certificate and not truely open.
The whole business of conditioning certificates has done nothing to improve safety or reduce crime. As another member writes, Colin Greenwood (ex Police Officer and Editor of Guns Review) was a great Counsel in these matters.
I think the whole matter should be taken out of Police Control and given back to the Post Offices or other third party which deals with it on an independent but fair and equal basis without the "interpretation" of individual Police Forces which, in many cases, don't have a clue.