A British corporate investigator and his wife, detained for the work they did for pharmaceuticals giant GSK, will not appeal a Chinese court's decision to sentence them to prison, Reuters reported on Friday.Peter Humphrey and his American wife Yu Yingzeng were sentenced to two and a half and two years in jail, respectively, for illegally obtaining private records of Chinese citizens and selling the relative information."All of us lawyers have met with the couple and they said they don't want to appeal," Humphrey's defending lawyer, Zhai Jian, said in an interview.On Monday, the British pharmaceuticals giant came under scrutiny after it received an anonymous email accusing it of bribing Syrian distributors.The email, addressed to chief executive Andrew Witty and Judy Lewent, the chair of GSK's audit committee, says: "GSK has been engaging in multiple corrupt and illegal practices in conducting its pharmaceutical business in Syria."The claims follow similar accusations the company faced in Iraq, Poland, China, Lebanon and Jordan."All the claims in this email will be thoroughly investigated using internal and external resources as part of our ongoing investigation into operations in Syria," said a GSK's spokesman. "We are committed to taking any disciplinary actions resulting from the findings. We have suspended our relationship with our distributors in the country pending the outcome of our investigation."GSK shares were up 0.93% to 1,407p at 10:31 on Friday.DC