As you have sorted your own problem, Shorn... hope you dont mind if I ask another Lightroom question which isnt in the Help files.
I have keyworded almost all my photos with 3 or 4 keywords each.
If I click on the "birds" keyword, it brings up all the bird photos.
If I click Ctrl and also highlight the "white" keyword, it brings up everything white, ..... ie, flowers, clothes, everthing.
How do I get an intersection of birds and white..........giving me just white birds?
Also, now everything is keyworded..... why do I need collections?
If I want to look for forest shots...I just click the forest keyword, why have a collection called forests? Or am I missing something?