Hi Colin
What are you trying to find out? Is it the censuses as you have later information?
You can search 1911 for free and just pay to see iomages.
1901 costs less on pay per view, just go to findmycast,com, but you can see census on Ancestry for free if you're a member of a library in the uk.
If it's his birth youwant, you can try free bmd, but you may noy be able to narrow it down to one.
I'll have a go.
Best wishes
Emms