The most common and most likely answer to this crossword clue is the 8 plus 7 letter word HEATHROW AIRPORT
I've seen this crossword clue in Financial Times
H
E
A
T
H
R
O
W
A
I
R
P
O
R
T
More clues leading to the result HEATHROW AIRPORT
Buddy explains!
The straight part
We know that "some ups and downs here" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case some ups and downs here = heathrow airport.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.