To keep the existing info in the boxes you have to click "revise search"
but it positions the screen too high, so only half your search is visible.
It needs to position the name boxes at the top of the screen.
Having selected exact match on first names, then type the name, you still get a list of variants which you didn't want to see.
Having not selected phonetic search surnames, -ditto-. Distracting.
I agree about not being able to see a list of districts within a selected county.
Countries gives you the option of All England, All Wales. Useful.
But if you type "All", you also get CornwALL. - logical?!