Soviet leader British never misled about zero hour (8)
I believe the answer is:
brezhnev
'soviet leader' is the definition.
The definition suggests a singular noun which matches the answer.
'british never misled about zero hour' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'misled' indicates anagramming the letters (I've seen 'misleading' mean this (I've seen this in other clues)).
'about' is an insertion indicator.
'zero' becomes 'z'.
'hour' becomes 'h'.
'never' anagrammed gives 'renev'.
'z'+'h'='zh'
'renev' enclosing 'zh' is 'rezhnev'.
'b'+'rezhnev'='BREZHNEV'
Can you help me to learn more?
(Other definitions for brezhnev that I've seen before include "President of the USSR, 1977-82" , "Former USSR President" , "Soviet leader 1964-82" , "Soviet Union president, d. 1982" , "Leonid ---, succeeded Khrushchev" .)