Prince's Sporting Club in Surrey has pleaded guilty at Southwark Crown Court to corporate manslaughter after 11-year-old Mari-Simon Cronje died when she was hit by a boat towing the inflatable she was riding.
Company director Frederick Glen Walker was cleared of any offences after the Crown Prosecution Service dropped charges against him.
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The Hammers moved to the Olympic Stadium in May leaving their old site to be developed for housing.
The first officer shouted "look!" as the drone passed next to the right wing at around 11,000ft above south-east London.
They found a sheepish looking ewe with a traffic cone on her head in the middle of a field.