Music publishing houses accepting Lilypond files?

[Colin Campbell]

As the title implies: I've just converted a score from Finale, after the 
composer had given up trying to get a readable layout. He's delighted 
with the result, and seems interested in exploring LP. As he is also 
considering publishing his piece, my question to the community is: which 
publishers  will accept submission in Lilypond format (or perhaps as 
.PDF or .SVG) and do you have any recommendations or experiences?

Cheers,
Colin