Logical result of Cornish river and home counties being adjacent? (5)
I believe the answer is:
false
'logical result' is the definition.
('false' is a value in logic)
'cornish river and home counties being adjacent?' is the wordplay.
I cannot really understand how this works, but
'river' could be 'fal' (I've seen this in other clues) and 'fal' is found within the answer.
'home counties' could be 'se' and 'se' is located in the answer.
No letters remain.
This may be the basis of clue (or it may be nonsense).
'of' acts as a link.
(Other definitions for false that I've seen before include "Sham" , "Incorrect" , "Forged" , "Mendacious" , "Untrue - treacherous - counterfeit" .)