Ukraine's freed opposition leader Yulia Tymoshenko has spoken to Angela Merkel by telephone, according to Reuters.
The German Chancellor "congratulated Yulia Tymoshenko on her release and expressed the certainty that her return to mainstream politics would become one of the main factors in stabilising the situation in Ukraine", a statement said.
More top news
Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
The first man to be convicted of murder on the basis of DNA evidence should be moved to an open prison, according to the Parole Board.