The most common and most likely answer to this crossword clue is the 7 letter word FIREMAN
I've seen this crossword clue in The Sunday Telegraph
F
I
R
E
M
A
N
More clues leading to the result FIREMAN
- Leader of indie band grabbed by groupie, one with laddered hose?
- Sack worker, one often told to go to blazes
- He may be required to stop smoking
- Female's anger directed at a guy, emergency worker
- Trouble shooter HR guy responsible for lay-offs?
- d One supplies handle if giving him a lift?
- Person enjoying liberty heartlessly imprisoning one who rescues cats?
Buddy explains!

The straight part
We know that "one often told to go to blazes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one often told to go to blazes = fireman.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.
What does FIREMAN mean?
FIREMAN noun- Someone (especially one who is male) who is skilled in the work of fighting fire.
- A person (originally a man) who keeps the fire going underneath a steam boiler (originally, shoveling coal by hand), particularly on a railroad locomotive or steamship.
- By extension of the above, an assistant on any locomotive, whether steam-powered or not.
- A relief pitcher.
- A safety inspector in coal mines.