  We show that the class of Banach algebras that can be isometrically
represented on an $L^p$-space, for $p\neq 2$, is not closed under quotients.
This answers a question asked by Le Merdy 20 years ago. Our methods are heavily
reliant on our earlier study of Banach algebras generated by invertible
isometries of $L^p$-spaces.
