Probably the most successful British metal band since the days of NWOBHM were Cradle of Filth , formed in 1991 .
Probably the most successful British metal band since the days of NWOBHM pursuing a form of extreme metal that is difficult to categorise .
Probably the most successful British metal band since the days of NWOBHM were Cradle of Filth , formed in 1991 , and pursuing a form of extreme metal that is difficult to categorise .