LONDON — A British man who is terminally ill with motor neuron disease asked the High Court in London on Monday to let him end his life.

Noel Conway is challenging Britain’s ban on assisted suicide, arguing that it is incompatible with protections of human rights.

Conway, 67, was diagnosed with the degenerative condition in 2014 and doctors have said he will die within a year. Conway says while he retains the mental capacity to make the decision, he wishes to be able to arramge a ‘‘peaceful and dignified’’ death at a time of his choosing.

‘‘I know I am going to die anyway, but how and when should be up to me,’’ he said.

A previous challenge to Britain’s ban on assisted dying by another man was rejected in 2014 by the Supreme Court.

Associated Press