The most common and most likely answer to this crossword clue is the 11 plus 5 letter word TWENTY-FOUR SEVEN
I've seen this crossword clue in The Guardian
T
W
E
N
T
Y
-
F
O
U
R
S
E
V
E
N
Buddy explains!
The straight part
We know that "Always" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case always = twenty-four seven.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.