By Sophie Bateman A bespoke tailor has described how he and his teenage employee tried to help a young mother who was stabbed outside his shop, saying “how can someone do that to another human being”. Imran Khan, whose shop is a well-known feature of Bradford’s Westgate, ended up covered in blood as he went to the aid of 27-year-old Kulsuma Akter on Saturday afternoon. Mr Khan said a 15-year-old boy, who works in the shop at weekends, raised the alarm first as he went out into the street to get his lunch. “He said to me ‘I’ve just seen someone get stabbed’, Mr Khan told the PA news agency. “We…