Simon Cowell demands apology from Louis

Simon Cowell demands that his X Factor co-star Louis Walsh apologises for making jokes at his expense.

In his autobiography Fast Track To Fame, Walsh says that Cowell?s greatest achievements are discovering Sinitta, Zig and Zag, and Robson and Jerome.

Simon now accuses Louis of being ??cocky?? and insisted that he show more respect.

??Before he gets too cocky he should remember that or return the money I?ve made him! We have enough divas among the contestants, we don?t need them on our side too,?? says Cowell