Dr Peter Saunders, from Care Not Killing, a UK based organisation which promotes care and opposes euthanasia said Paul Lamb is seeking a "very radical change in the law."
He said: "If he was successful in getting that legal change it would drive a coach and horses through not the suicide act but the murder act as well and that would put a lot of vulnerable, elderly people at risk
"The proper place to be making this decision is not in court, it's in Parliament", he added.
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This was despite more than a fifth experiencing delays of more than three hours, a Which? survey revealed.
Michael Haines said he wanted to continue his brother's legacy so he would be remembered for his good work rather than his death.
Tomorrow should be a bit quieter in most places, with lighter winds and some lovely winter sunshine.