False thatching on one place (5)

I believe the answer is:

wigan

I'm a little stuck... Click here to teach me more about this clue!

'false thatching' is the definition.
I can't tell whether this defines the answer.

'on one place' is the wordplay.
'on' says to put letters next to each other.
'one' becomes 'an' (an apple is one apple).
'place' becomes 'wig' (I am not sure about this - if you are sure you should believe this answer much more).
'an' after 'wig' is 'WIGAN'.

Can you help me to learn more?

(Other definitions for wigan that I've seen before include "Town near Manchester" , "Lancashire FC" , "Greater Manchester town with an "Athletic" football club" , "Lancashire town" , "Manchester-area town, its Pier, Orwell" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.