Maybe London's joint originator of written work (10)

I believe the answer is:

authorship

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

'originator of written work' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see a link between them that I don't see?

'maybe london's joint' is the wordplay.
'maybe london' becomes 'authors' (I can't justify this - if you can you should believe this answer much more).
'joint' becomes 'hip joint' (part of body).
'authors'+'hip'='AUTHORSHIP'

Can you help me to learn more?

(Another definition for authorship that I've seen is " Writing".)

I've seen this clue in The Guardian.

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.