Come October, you will be able to catch both Slayer and Slipknot in the same night – on `The Unholy Alliance` tour. Confirmed dates are as follows: OCTOBER 3 Glasgow SECC 5 Birmingham NIA 6 Manchester MEN Arena 8 Cardiff International Arena 9 Hammersmith Apollo 10 Hammersmith Apollo There will be an opening act TBC and Slipknot will close all shows. Tickets go on sale this Wednesday!