Butler was killed by a luggage lift at Burghley House while attempting to free an item of baggage.
A Cambridgeshire man is charged with murder following the death of a man earlier this month.
Plans for 6,500 homes and facilities on the former Waterbeach Barracks site have been put out to public consultation.
Teenage striker Harry Limb climbs nine tiers
The children bringing hope to grieving parents
Referee Chris Sarginson issues three red cards as Peterborough beat nine-man Rochdale in League One.
Luke Berry scores his 16th goal of the season as Cambridge United beat Barnet at The Hive in League Two.
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