Thank you everyone for your replies, that is my grandfather and his family members on all of those records, I'm not sure why he is listed as only being 1 on the 1911 ones but he was defiantly born in 1909. The man listed as the head is his uncle, my dad only knew him as his grandad until he grew up as I think the siblings lived together all of their lives.
I don't know if dad still has it but in the past when I asked he said no one was named as his father on his birth certificate. I was really hoping that there would have been some kind of record of some kinds of child maintenance but I couldn't find anything, still hoping that the DNA will throw up a relative to my mystery g grandfather that I can trace him through.
One intriguing thing is that I have a percentage of French or German DNA according to 23andme where they say that I probably had one full-blooded ancestor born between 1840 - 1880 (my g grandmother was also born in 1880), I have spent a lot of time tracing my ancestry and unless there is another unknowingly illegitimate person or I have got the people wrong (unlikely as I have a family bible with a lot of that side in on top of the records)
so this is possibly my g grandfather but I don't suppose there were many overseas people in Middridge at that time?
I would love to be able to solve this for my dad as it does upset him still when he talks about it as it caused a major split in his family way back that was never repaired.