Local interest in airline a monarch set up (4,3)
I believe the answer is:
real ale
'local interest' is the definition.
(local can mean pub)
'airline a monarch set up' is the wordplay.
'airline' becomes 'El Al' (Israeli airline).
'monarch' becomes 'ER' (abbreviation for Elizabeth Regina, British Queen).
'set up' shows that the letters should be reversed in order.
'elal'+'a'+'er'='elalaer'
'elalaer' reversed gives 'REAL ALE'.
'in' is the link.
(Other definitions for real ale that I've seen before include "What CAMRA wants" , "CAMRA interest" , "beer making" , "The RA in CAMRA" , "Bitter, possibly" .)