A respected solicitor and former Ukip parliamentary candidate took a fatal overdose of a sedative he bought in Mexico before emailing police: "It will probably kill me in 20 minutes. Can you please send someone to pick up my body."
Kalvin Paul Chapman's message added: "My flat door is unlocked. Much appeciated."
The 43-year-old was a prominent member of the local party, twice standing as a parliamentary candidate in Greater Manchester.
He was an active campaigner during the 2016 Brexit referendum.
A coroner concluded Mr Chapman took his own life after deliberately taking an overdose of a drug he bought while on holiday in Mexico.
The inquest earlier heard he suffered with various health problems and battled depression.
Manchester Coroners' Court was told Mr Chapman emailed Greater Manchester Police at 8.40pm on April 20th last year.
The message read: "I have taken a fatal overdose, it will probably kill me in 20 minutes. Can you please send someone to pick up my body. My flat door is unlocked. Much appeciated."
The hearing was hold police arrived at Mr Chapman's Ancoats flat at around 9.27pm.
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Officers tried giving him CPR while calling for paramedics. Mr Chapman was pronounced dead at 10.30pm.
He penned two suicide notes - one to the police and another to the coroner - the court heard.
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Police coroners' officer Benjamin Dobbs said the notes 'clearly expressed his intention to take his own life' and revealed that he had obtained the drug, which is not prescribed or used in the UK, while on holiday in Mexico.
The inquest heard Mr Chapman, who specialised in commercial litigation banking law and worked in central Manchester, had a number of debilitating illnesses, including a heart problem which saw him have a pacemaker fitted in 1996; deep vein thrombosis; and chronic lower back pain.
He was more recently diagnosed with a tumour behind his eye.
Investigations found there was a previous occasion when Mr Chapman - born Christopher Robin Greenley in Hull in 1974 and also known as Christopher Reeve before changing his name - posted a video on social media saying he was going to kill himself in July 2017.
He later said could not remember uploading it and had been drinking heavily when he was visited, and found safe and well, by officers.
A post-mortem and toxicology report found he had fatal levels of a sedative in his system, as well as a small amount of another drug and alcohol.
His cause of death was given as drug toxicity. The police ruled out any third party involvement.
Assistant coroner Jean Harkin recorded a conclusion of suicide, adding: "It is clear Mr Chapman was in a lot of pain and had a lot of medical conditions and also mental health issues in the form of the depressions he was being treated for.
"However, it can also be seen he was a well-respected man and his colleague has told us not only does she think that but also the party he campaigned for."
Friend and party colleague Anita Arbar told the hearing she met Mr Chapman when he joined the local Ukip group and they went leafleting together during the 2016 referendum, as well as visiting Brussels.
He stood as a parliamentary candidate in Stretford and Urmston in 2015, and Manchester Central in 2017.
Ms Arbar said it was clear 'something was bothering him', but said he 'seemed happy' and there was no indication he would hurt himself.
She said Mr Chapman's death left family, friends and party colleagues 'devastated."
Ukip leader Gerard Batten tweeted two days after his death last year saying: "I am very sad to hear this morning of the death of Kalvin Chapman, a loyal and committed Ukip member, branch officer, and candidate.
"He will be missed by us all. Our commiserations and sympathies go out to his family and friends. Rest in peace.
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