To claim this as a find you must have found caches which score you 40 points. How do you score points? By finding different types of cache outside the United Kingdom! Each cache type in each country (as defined by the powers that be at geocaching.com) is worth 1 point.
For example:
Finding a Virtual cache in France would be worth 1 point.
Finding 4 Traditional caches in Spain is only worth 1 point, as you've only found one type in this country.
Finding a Traditional cache and a Multicache in Germany would be worth 2 points.
Finding Virtual cache, a Traditional cache and a Multicache in Belgium would be worth 3 points.
If you'd found all of the above then your total would be 7 points.
So, get out there and find ten cache types in four countries, or fewer types in more countries - the choice is yours!
I've been lucky enough to visit lots of countries since I started caching and I qualify for this cache with 41 points
There is a checker to help you work out if you've qualified at this link.
The other challenges which make up this series can be found at this bookmark link.