There are few crimes more repugnant than physically shaking your own baby so hard it causes permanent brain damage.

Yet that is what 21-year-old Gary Johnson did to his daughter Nicole, all because he "lost it" when she woke screaming one morning, as babies often do.

Johnson, unable to come to terms with the unimaginable damage he inflicted on his own flesh and blood, then concocted a flight of fantasy, claiming he had tripped on a pillow and fell on the floor while cradling his eight-week-old daughter.

Yesterday, a jury at Oxford Crown Court didn't believe him and found him guilty of grievous bodily harm with intent.

TodaySept25 he is in jail — and, we hope, for a long time.

Only Johnson knows what happened on that fateful morning, and why he didn't seek immediate medical help after his fit of pique.

His unforgivable actions have deprived an otherwise healthy and bubbly baby of her entire life.

Little Nicole is permanently brain damaged, will not be able to see properly and has no chance of ever talking.

In his prison cell, he will have plenty of time to reflect on his abominable behaviour towards an innocent child.