A further problem is that the presence of a UK catalogue number does not mean it is exclusively a UK release. It may just mean that there is a distinct catalogue number for the UK as opposed to other European countries, and this is quite common.

I think we have to accept that we are probably never going to have the whole "Europe" issue exactly right and we are always going to have releases under the wrong flag, but we do the best we can to keep it under control. Plus we do of course make corrections as soon as possible, as and when they are flagged (no pun intended) up.

Whilst I can see the argument for an option to enter country of manufacture AND country(-ies) of release, I do think that would actually cause more problems than it would solve, and causes unnecessary complications when one of 45Worlds/Cat's goals is to remain as user-friendly as possible and accessible to as many people as possible also.