Home Secretary Theresa May announced that a public inquiry will be held into the death of the former Russian spy Alexander Litvinenko.
May said: "I very much hope that this inquiry will be of some comfort to his widow."
Litvinenko, 43, died after drinking tea that was poisoned with the radioactive substance polonium-210.
His widow, Marina is expected to speak later today.
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The court heard how two-year-old Jeremiah Regis-Ngaujah suffered more than 100 separate injuries, including an adult bite mark on his chest.
The actor pledged the cash reward after 95-year-old veteran Alfred Barlow made a heartbreaking appeal on ITV News for his stolen war medals.
European Council President, Donald Tusk, says Theresa May's settled status offer to EU citizens in the UK risks making things worse.