The most common and most likely answer to this crossword clue is the 3 plus 5 letter word TOM THUMB
I've seen this crossword clue in The Daily Telegraph
T
O
M
T
H
U
M
B
More clues leading to the result TOM THUMB
- After driver’s test setback attempt to get a lift for little fellow
- Hitch after cat does for small performer
- Tiny plant: cat’s sat on leaf
- Little fellow's to hitchhike, covering miles
- Little fellow and two maidens randomly entering bubbly hot tub
- Little fellow to hitchhike covering miles
- Small person failed MOT — having to seek a lift
- Hmm … but to recast the subject of folklore tales …
- Little person having to hitchhike, covering miles
- On half a drum with one digit, play ‘The Little General’
Buddy explains!

The straight part
We know that "Little person" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case little person = tom thumb.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.