The MP quoted so prominantly in the article is rather playing to the gallery with his
"It’s shameful that child killers and rapists can abuse human rights laws to escape deportation."
The actual written answer does not specify the crimes and moreover says:
Only in exceptional circumstances will family life, the best interests of a child or private life outweigh criminality and the public interest in seeing foreign national offenders deported where they have received a custodial sentence of at least four years.
So there is a certain amount of common sense being applied - remember we are not considering the rights of the criminal here as much as that of their children
Where the crimes are moderately mild < 4 years sentence then that is being considered favorably
But it's not a reason to keep serious offenders a fact not being highlighted by the Telegraph who are clearly more interested in provoking the ire of the right than presenting a balanced evaluation of the situation