He added: "Knowing that he was being handcuffed, I would say they put far too much [pressure on Mubenga]. He must have been in horrible pain and pressure."
He said Mubenga was not making other complaints but he could hear him heaving as though being sick, adding: "I think they were scared of him ... they put so much pressure on him because he looked a big lad. The three security guards were big blokes as well."
In 2006, Mubenga was convicted of actual bodily harm after a brawl in a nightclub and given a two-year sentence.
Any minute now we can expect someone to suggest that there was no need for the G4S guys at all and the deceased could just have been trusted to go alone.
I don't think he's the kind of person who would have responded to anything other than robust handling and secure restraints.