The most common and most likely answer to this crossword clue is the 3 plus 4 letter word END USER
I've seen this crossword clue in The Daily Telegraph
E
N
D
U
S
E
R
More clues leading to the result END USER
- Frenchman taking in French south upset ultimate consumer
- Customer from the States coming in closer?
- Customer finally swimming under sea? Not entirely
- Customer ordered nudes with expression of hesitation
- As a consumer, going around the South of France René’s all upset
- Some send us errands for a consumer
- Actual consumer suffers with a twist in the tail
- Ensured distribution to ultimate recipient
- The recipient of goods sold as scrap by a junkie
- The last person something is intended for?
Buddy explains!

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