From bad to worse -- Bertie, perhaps (7)
I believe the answer is:
wooster
'bertie perhaps' is the definition.
I can't tell whether this defines the answer.
'from bad to worse' is the wordplay.
'to worse' can be anagrammed to 'WOOSTER'.
However, I'm not sure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for wooster that I've seen before include "Wodehouse's Bertie" , "Wodehouse's hero" , "Wodehouse character" , "English gentlemen" , "Man-about-town" .)