Traffic laws may need to be clarified following outrage over a speeding charge against a West Yorkshire ambulance driver delivering a life-saving organ, the Government has said.

Transport Secretary Alistair Darling and Home Office Minister Hazel Blears are in talks about implications of the decision to prosecute ambulance driver Mike Ferguson.

Ms Blears told MPs in a Commons written reply that she would "consider in the light of this what guidance or clarification of the law might be necessary".

She said: "I am very aware of the current concerns about the legal position of vehicles which exceed the speed limit whilst transporting human tissue or human organs."

Mr Ferguson, of Birstall, allegedly drove a marked vehicle with blue flashing lights at 104mph while delivering a liver for a transplant on January 16.

The senior driver with West Yorkshire Metropolitan Ambulance Service was making a mercy dash to Addenbrookes Hospital in Cambridge at the time.

He denies the charge and his trial will start on October 20.