When I was a boy Halifax wasn't a good good place to live, it's nicer now!
While Halifax today is less industrially polluted than your picture, I'm not sure it is necessarily "nicer".
At the time of your picture I am pretty certain I could have walked around any area of the town safely – not so now, as there are areas it is not wise for a person of my ethnicity to walk around in daylight.
Not somewhare I particularly choose to visit & I only live around 8 miles away. Not that Huddersfield is that much better, but both are a long way ahead of Bradford. Despite many years of "initiatives", none of these towns have really recovered from the loss the industries that caused their expansion in Victorian times.
Nigel B.