The most common and most likely answer to this crossword clue is the 8 letter word COBBLERS
I've seen this crossword clue in The Daily Telegraph
C
O
B
B
L
E
R
S
More clues leading to the result COBBLERS
- Wallops Liberal moving to the right? Rubbish!
- Rubbish people working away at Oxford?
- A load of rubbish fruit pies
- They used the last round stone with last of their bricks
- Moonshine drinks
- They’ll go to work at last? Nonsense!
- Shoemakers with balls
- Bull drinks
- They’ll fix up pumps and platforms — with mules?
- At last, the right men for the job?
Buddy explains!

The straight part
We know that "They’ll fix up pumps and platforms — with mules?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they’ll fix up pumps and platforms — with mules? = cobblers.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 COBBLERS mean?
COBBLERS noun- A person who makes and repairs shoes
- A person who lays cobbles; a roadworker
- A kind of pie, usually filled with fruit, that lacks a crust at the base
- (usually in the plural) A police officer
- An alcoholic drink containing spirit or wine, with sugar and lemon juice
- A clumsy workman