Front controller reached 100 router match iterations

#0 /var/www/vhosts/kevinmayhew.co.uk/httpdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(183): Mage::throwException('Front controlle...')
#1 /var/www/vhosts/kevinmayhew.co.uk/httpdocs/app/code/core/Mage/Core/Model/App.php(340): Mage_Core_Controller_Varien_Front->dispatch()
#2 /var/www/vhosts/kevinmayhew.co.uk/httpdocs/app/Mage.php(627): Mage_Core_Model_App->run(Array)
#3 /var/www/vhosts/kevinmayhew.co.uk/httpdocs/index.php(138): Mage::run('base', 'website')
#4 {main}