Kalei­do­scope fes­ti­val, the fam­i­ly event sit­u­at­ed on the slopes of Alexan­dra Palace park in north Lon­don, has just made its first announce­ment, and it’s Faith­less doing a full live show for the head­lin­er on their spec­tac­u­lar main stage. Also appear­ing: Goldie, Eats Every­thing, Sara Cox, Sleep­er, DJ Spoony, Bea­t­les Dub Club and ‘R’ Voic­es choir. Two…