Singer says he acted in self defence over headbutt claims
Prosecution opens at Liverpool Crown Court
Frontman accused of breaking a man's nose
Plus Abi Harding denies engagement rumours
Saw Doctors will also help festival celebrate forty-fifth year
Bands set to play charity festival in a Zoo
The initiative had helped The Zutons, James Morrison and Jem
The Liverpool band's last single failed to chart
Band set to hit the road this winter
Frontman Dave McCabe voices support for star