A TV documentary about a dad-of-three’s decision to end his own life at a Swiss suicide clinic after a ten-month battle with motor neurone disease will be aired tonight.

Right to Die: Simon’s Choice focuses on the life and death of Purley businessman Simon Binner, 57, and his decision to fly to the Eternal Spirit Clinic in Basel, Switzerland after a second reading for the Assisted Dying Bill for England and Wales was rejected.

The former executive director of Caremark in Sutton announced his own death on LinkedIn in October last year after being diagnosed with aggressive motor neurone disease in January.

RELATED: Terminally ill Purley man Simon Binner announces own death at Swiss clinic on LinkedIn

In his post Mr Binner said: "My MND accelerated very rapidly. The sawbones initially thought I would last until 2017/2018, but they were mistaken - no worries, it's an inexact science!

"I don't recommend MND, better to have one massive fatal stroke or be killed instantly by a drunk driver."

Mr Binner was a member of the British Humanist Association (BHA), which has campaigned to make assisted dying legal in the UK.

The 90-minute BBC Two documentary shows the moral, emotional and legal dilemmas his family and friends face around his choice.

In a British television first, producers gain access to Switzerland’s second largest assisted suicide clinic where Mr Binner makes the appointment to die.

Wife Debbie Binner told the programme’s producers: “I’ve always been quite anti-assisted dying.

“It’s one of those dinner-party conversations you have, never dreaming that you’d ever actually be having the conversation.”

Patrick Holland, BBC head of documentary commissioning, said: “This is a hugely important and powerful film about one of the most contentious issues facing families in the UK.

“Simon, his wife, family and friends have allowed us into their lives as they face one of the biggest dilemmas imaginable.

“Together they confront the terrible choices involved with love and humbling candour.”

Adam Barker, BBC Two channel editor, said: “The film sensitively explores the issue of assisted suicide with intimate access to one family facing up to one of the toughest decisions there is to make.”

The documentary, made by Minnow Films in partnership with the Open University, will be aired at 9pm.