@WolfOfOdin
This has upset me quite a lot. What a tragic thing to happen.
I also think the people gawping at him, and laughing at what happened (at the scene) are pure pondscum. Worse actually!
It's basically hi-jinks gone wrong (HORRIBLY wrong!) A really awful tragic turn of events. To the people saying 'what was he doing up there anyway?' Do have some compassion please.
We all do daft things, and sometimes things that endanger us. If a young woman walked home from a nightclub, is it her own fault if she gets murdered? If someone has had a few drinks, and they were larking about near the River Severn, and toppled into it and drowned, is it their fault if they drown? Did they ASK for it? Did they deserve to die? 
No, they bloody well didn't! They were doing something many people do, and they got unlucky.
I know this is not something most people would do, and I can't imagine what possessed this man to climb almost 300 feet to the top of a chimney on a cold late-October night, (with no top on.) But he did do it. Maybe for a laugh, a dare, a challenge, who knows???
But he most certainly didn't deserve this heartbreaking, tragic end. He must have been SO scared and cold, and I can't even imagine what must have been going through his head. I just pray that he went into a sleep/coma quite quickly, so he didn't suffer for long.
Also, as a previous poster said, if the man had survived, he would have been lambasted on social media and the news, for being reckless, and risking the lives of the emergency services people. But as he tragically died, people are turning on the emergency services for 'taking too long,' and some are even blaming them for his death!
They did everything they could FGS!
R.I.P. this poor man. And my thoughts go out to his family too. 
@Morgan12
There was a young girl in my town who committed suicide by jumping from a block of flats. A crowd gathered whilst she was up there, filming her and shouting 'jump jump jump'. There are just no words. Poor, poor man! 
I wonder if you live in the same town I used to live!!! One time (some 7-8 years back) in the town I used to live - a man was attempting to jump off the top of a multi-story car park (5 or 6 storeys, so like maybe 60 feet I think it was...) Below on the ground, were people shouting JUMP JUMP JUMP! And laughing and jeering. Absolutely vile people. 