So in my view, the public disclosure of this driver's face and personal details all over the mainstream media is utterly abhorrent!
The evidence seems to suggest that the tractor unit he was driving entered the UK at Holyhead off a ferry from Dublin on Saturday. He has probably done a load of pick-ups and drop-offs of trailers all over UK since then.
The tractor then collected the (unaccompanied) refrigerated trailer off a ferry at Purfleet at 0105 yesterday, having arrived from Zeebrugge. It was then driven to the trading estate in Grays, where it arrived at 0130. The driver got out, and opened the back doors to discover the bodies. He rang the ambulance service and was then arrested on suspicion of murder!
It would appear he had no contact with the trailer before picking it up, so even if he was the one that turned on the refrigeration plant, it would not have killed anyone in the 25 minutes it took to get to Grays. So he cannot be guilty of causing the death of the 39 Chinese.
I think the only doubt in my mind is whether he could be "in on it", and was told what the cargo was, and that he should open the back door to allow their escape when he got to Grays. He might have pocketed a few notes, so MAY be guilty (at most, in my opinion) of something like "conspiracy to conduct people smuggling/modern slavery/etc".
But the police need to release this guy as soon as possible if they have no other evidence (e.g. from the house searches in Northern Ireland, where he comes from), and don't make him a scapegoat for what is probably a massive international operation!