Twistor space structure of the box coefficients of N=1 one-loop amplitudes

We examine the coefficients of the box functions in N=1 supersymmetric one-loop amplitudes. We present the box coefficients for all six point N=1 amplitudes and certain all n example coefficients. We find for “next-to MHV” amplitudes that these box coefficients have coplanar support in twistor space.