A man who had gone into a diabetic coma on a bus in Leeds was shot twice with a Taser gun by police who feared he may have been a security threat.
Nicholas Gaubert has described how the incident happened in July 2005, just a week before the fatal shooting of Brazilian man Jean Charles de Menezes.
Mr Gaubert, 34, said he was suffering severe post-traumatic stress as a result of the shooting.
The Independent Police Complaints Commission (IPCC) is investigating.
Mr Gaubert, who lives in Leeds, said he had now decided to speak out after the Crown Prosecution Service ruled no officers involved should be charged with any criminal offences.
The IPCC is still considering whether any disciplinary matters will be brought against the officers.
Armed police deployed
Mr Gaubert said he was on his way to meet friends when he suffered a hypoglycaemic fit on the bus which left
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