Just to clarify my situation, I have the police photo but it does not make clear which side of the cross roads it took place.
They cannot tell us which side it was which is important as if it was one side it was my wife if the other it was me. I went out directly after my wife drove us home, we live 1 min from the junction who was at the wheel.
I explained this and they seem OK with me accepting the blame as my wife already has 3 points.