The most common and most likely answer to this crossword clue is the 9 letter word ISLINGTON
I've seen this crossword clue in The Daily Telegraph
I
S
L
I
N
G
T
O
N
More clues leading to the result ISLINGTON
- Possibly 15 here not getting up after one cocktail
- Area of London containing heath – no it’s Barking
- Literally, none here forced into swallowing alcoholic drink
- One saint catching fish, going by place associated with Angel
- I mixed drink with style, here in London
- I celebrate fashion around liberal area in capital
- I drink near the entrance to the Old Nag’s Head in 18 location
- Is fish not brought up here in London?
- Someone other than me about to tour pitch where Arsenal play
Buddy explains!

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