Many thanks for your replies, Milliepede & CaroleW. That may be the right death, which would answer the problems l've had looking for Daniel or David William. l have been unable to find him on neither the 1911C or marriages. l also looked for his parents on the 1911C, just incase he had changed his name again, but was still living at home, but they're not on there either. They would have both been 70 by then, perhaps they had died. l had found on Probates, a Bartholomew Haley [David had a younger brother Bartholomew], who had lived in Narrow St, Limehouse, along with his brother David, who was his sole executor. But then realised that this Bartholomew was the wrong one, as he had died in 1889.
Milliepede, l've just spotted you suggest looking at 1939, l'll look at that. Thanks again for your help.