The most common and most likely answer to this crossword clue is the 4 plus 3 letter word EAST END
I've seen this crossword clue in The Guardian
E
A
S
T
E
N
D
More clues leading to the result EAST END
- Dean set to work in part of London
- After exams regularly nurse in part of capital
- European in role of nurse in soap scene
- Devil leaving Black Death region in London
- Each will surmount small incline in part of London?
- Part of London not historically associated with aspiration?
- Leaving hospital, crook hastened to city area
- Upset at dense part of London
- Meal project forgets starters in London
- Clue fort in part of London
Buddy explains!

The straight part
We know that "part of London" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of london = east end.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.