In 2014, Warren won the BDO Gold Cup, beating Pip Blackwell in the final three sets to nil.
[4] Warren reached the quarter-final of the 2018 World Championship, beating Wesley Harms 3–1 in an impressive showing in the 1st round; in the 2nd round, after a tough start, he defeated Willem Mandigers 4–2 to set up a quarter-final match against Mark McGeeney.
[8] His prize winning fee of £23,000 was the lowest awarded to a world champion since 1989, as a result of the BDO's financial difficulties which led to it going into liquidation later in the year.
[10] Away from darts, Warren works as a roofer and lives in Tynewydd, Rhondda Cynon Taf.
[11] In 2001, Warren was involved in an incident in which he was splashed with boiling chip fat – suffering 20% upper body burns which gave him heavy scarring.