Womaniser, as no other, is into sparkling wine (8)
I believe the answer is:
casanova
'womaniser' is the definition.
(Casanova is an example)
'as no other is into sparkling wine' is the wordplay.
'other' indicates anagramming the letters.
'is into' means one lot of letters goes inside another.
'sparkling wine' becomes 'cava' (I've seen this before).
'as'+'no'='asno'
'asno' with letters rearranged gives 'sano'.
'sano' placed into 'cava' is 'CASANOVA'.
(Other definitions for casanova that I've seen before include "Licentious man" , "18th century Italian renowned for love affairs" , "Legendary lover" , "Lady-killer" , "Amorous person" .)