Different English phone box is one that's not foreigner-friendly (9)
I believe the answer is:
xenophobe
'one that's not foreigner-friendly' is the definition.
I can't tell whether this defines the answer.
'different english phone box' is the wordplay.
'different' is an anagram indicator (letters placed in a different order).
'english' becomes 'E' (abbreviation as in OED).
'e'+'phone'+'box'='ephonebox'
'ephonebox' is an anagram of 'XENOPHOBE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for xenophobe that I've seen before include "One fearing foreigners" , "One fears or hates foreigners" , "Person fearing strangers" , "Hater of foreigners" , "a kind of racist?" .)