The most common and most likely answer to this crossword clue is the 9 letter word SASSENACH
I've seen this crossword clue in Independent
S
A
S
S
E
N
A
C
H
More clues leading to the result SASSENACH
- Englishman and SAS chase criminal around north
- Birches raised in small wood for English person
- An Englishman in Scotland
- An Englishman to an Irishman or Scotsman, possibly
- For some, English school must accept detailed compliance with answer
- Singular Scottish ‘tut’ assuming a point about English
- Foolishly, she can — accommodating idiot Englishman
- South American playing chess with an Englishman
- She can broadcast about idiot Englishman
Buddy explains!

The straight part
We know that "For some, English" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case for some, english = sassenach.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SASSENACH mean?
SASSENACH noun- An English person.
- A Lowland Scot.