Sarah Lancashire: How actress took months to ace Welsh accent for new drama The Accident

SARAH Lancashire pulls off her most emotionally-draining role to date with The Accident’s Polly Bevan – a battered wife whose only daughter is left disabled in an ­explosion that kills dozens of children. But the award-winning actress, who’s no stranger to tackling the traumatic or the taboo, says the hardest part about filming Channel 4’s new Bafta-tipped drama was mastering a Welsh accent.