Here is 1911 - is this the one you mean?
https://www.familysearch.org/ark:/61903/1:1:XW1L-PGGJoseph Henry Simmons married Sarah Jane Shanny in 1901
Those 1911 names, Joseph snr and Joseph jnr match with this.
It looks as though your friend will have to get the birth certificate.
Thomas married Eliza Pook but they are living apart in 1901 and 1911.
There is a child Sidney born 1904 with mmn Pook.
Does your friend think Littleford is correct for the mother of his Joseph?
Does he have the marriage certificate for Joseph and Elizabeth Hough?
That would have father’s name.