In the judgement this afternoon, Sir Robert Owen also agreed not to include any evidence questioning whether the UK authorities could have prevented Litvinenko's death.
The coroner admitted the exclusion of this evidence could result in the inquest becoming "incomplete, misleading and unfair" and took the unusual step of inviting the government to hear the secret evidence in a separate secret inquiry behind closed doors.
The inquest is scheduled to begin on 2nd October.
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Feeling warmer in much lighter winds.
Delays, diversions and cancellations caused chaos to services on South West Trains which were hit by signal failures in south west London.
During the attack Ione Wells' head was smashed against the pavement, her attacked grabbed at her chest with such force that it tore her bra.