Three High Court judges are to hear the case of a severely disabled man from Wiltshire who wants the right to die with help.
Tony Nicklinson from Melksham has been paralysed since he had a stroke eight years ago. Mr Nicklinson wants a doctor to be allowed to lawfully end his life. The hearing in London is expected to last four days.
The daughters of a Wiltshire man fighting for the right to die have appeared on ITV1's This Morning to support him.
Tony Nicklinson from Melksham is paralysed by locked-in syndrome. His case for assisted suicide is being heard at the High Court this week