The X Factor star Tammy Cartwright – who many tipped as a potential winner after her powerful rendition of ‘One Night Only’ on Saturday’s show – has pulled out of the competition to care for her brother Gareth, who is struggling with a heroin addiction. The support worker, whose powerful vocals were lauded by Gary Barlow, told the judges she had never previously pursued a singing career because her brother had “a lot of issues” which took up her time. Cartwright has now decided against going any further in the competition, telling The Sun, “My younger brother Gareth has been on hard drugs for many years and he’s lived with me for most of those years…I made a deal with him — he’d keep off drugs and I would go for it on The X Factor. But he broke his promise just before boot camp. He was in a bad way and having lots of problems.” Unfortunately, Gareth overdosed just days after Tammy decided to give up on her singing dream, though has since recovered and is now five weeks clean. His sister insists, “This is not a sob story — I don’t want that, I love my life. Now we have to look forwards, not backwards…I’ll definitely give X Factor another go next year.” With Cartwright now out of contention, the bookmakers have young soul singer Jahmene Douglas as the 6/1 favourite to triumph in this year’s contest. His rendition of Etta James’ ‘At Last’ wowed judges in the audition stages, though he’ll have to beat the similarly strong Ella Henderson should he want to go all the way.