Repartee from British worker meeting royal lady (6)
I believe the answer is:
banter
'repartee' is the definition.
(I know that banter is a type of repartee)
'british worker meeting royal lady' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'worker' becomes 'ant' (worker is a type of ant).
'meeting' is a charade indicator (letters next to each other).
'royal lady' becomes 'ER' (short for Elizabeth Regina ie Queen Elizabeth).
'b'+'ant'+'er'='BANTER'
'from' is the link.
(Other definitions for banter that I've seen before include "Good-natured chaff" , "Good-natured teasing" , "Light teasing repartee" , "Good-natured repartee" , "Joking" .)