Child Tax Credit Helpline Jo Swinson To ask the Chancellor of the Exchequer how long the standard training period for staff joining the Child Tax Credits Helpline service is. Jane Kennedy HMRC operates the tax credits Helpline. This covers both Child Tax Credit and Working Tax Credit. I refer the hon. Member to the answer I gave to the hon. Member for Fareham (Mr. Hoban) on 31 January 2008, Official Report, column 683W.