A few nice business proposal images I found:
Niels Post's "Business Proposals"
Image by happyfamousartists
@ Clerckenwell Rd
Niels Post's "Business Proposals"
Image by happyfamousartists
First one to go up: Niels in action @ Curtain Rd
Niels Post's "Business Proposals"
Image by happyfamousartists
Art & trash @ Hanbury Street (near Brick Lane)