The driver of a speedboat which killed two members of the same family as it raged out of control was not attached to a safety device designed to cut power in an emergency, investigators have said.
Nick Milligan, 51, the managing director of Sky's advertising sales division, Sky Media, was declared dead at the scene in Padstow, Cornwall, with his daughter, Emily, eight, following the incident on Sunday, May 5.
The Marine Accident Investigation Branch report states: "The [boat] was fitted with a kill cord, but this was not attached to the driver at the time of the accident.
"Consequently, when the driver was ejected from the boat, the kill cord did not operate to stop the engine and the [boat] continued to circle out of control, and at speed."
It said the boat ran over members of the family "a number of times" as it circled in the water.
Devon waterskiing instructor Charlie Toogood has been hailed a hero after he leapt into a speedboat that lost control in Padstow, killed two family members and injuring four more.
Mr Toogood turned off the speedboat's engine and stopped it from causing further harm.
Nick Milligan, 51, and his eight-year-old daughter were killed in the accident. Four other members of his family were taken to hospital with two suffering "life-changing" injuries.
This is amateur footage of the speedboat circling after the family fell overboard at Padstow yesterday
The brother of father of four who died in a speedboat crash, which also killed his eight-year-old daughter, described him as an "extremely loving father, who doted on his family".
Nick Milligan, 51, was on holiday with his family in Padstow, Cornwall, when the accident happened.
The rest of his family are in hospital and his wife and four-year-old son are said to have "serious, potentially life-changing injuries".
ITV News' Richard Pallot reports.
Two girls, aged 10 and 12, involved in yesterday's speedboat tragedy in Padstow, Cornwall, both have minor injuries and are "recovering well", Devon and Cornwall Police has said.
Their father Nick Milligan and eight-year-old sister were killed in the accident.
A 39-year-old woman and her four-year-old son suffered "serious, potentially life changing injuries".
Tributes have poured for a TV executive who was killed along with his eight-year-old daughter, in a speedboat crash in Cornwall yesterday.
Ben Fenton wrote on Twitter: "Nick Milligan, who died with one of his kids in the Padstow speedboat accident, was one of the kindest, nicest funniest men I have ever met."
Stephen M said: "Incredibly sad news about Nick Milligan. An absolute tragedy, one of the truly lovely people in our business."
Stefano Hatfield tweeted: "Whenever I think of my encounters with Nick Milligan over 20 years all I can recall is laughter.Lovely, charming twinkle-eyed man.
"One of industry's best and loveliest."
The brother of Nick Milligan, who was killed in a speedboat accident in Cornwall, has paid tribute to him.
Max Milligan said he was an "extremely loving father and husband, son and brother who doted on his family".
"That he and my delightful niece died at their favourite place at the end of a gloriously sunny bank holiday weekend provides us with a tiny glimmer of light".
Devon and Cornwall police have given an update on the investigation into Sunday's speedboat crash in Padstow, Cornwall.
Earlier, it was confirmed that BSkyB executive Nick Milligan had been killed along with his eight-year-old daughter.
Detective Superintendent Jim Colwell said that a 39-year-old woman and her four-year-old son suffered "serious, potentially life changing injuries".
A 12-year-old and 10-year-old girl suffered minor injuries in the accident.
Police have said that the presence of a "kill cord" safety device will form a "key focus" of the investigation into a boat accident in which two people died in Padstow, Cornwall.
The cord's purpose is to ensure that a boat's engine is cut if the person in control goes overboard.
Det Supt Jim Colwell from Devon and Cornwall Police told reporters:
"Clearly the reasons why the boat didn't stop when it otherwise should have done, when there was nobody left on it, is a key part of our investigation.
"The kill cord - the presence of, the state of, and how it was attached or otherwise - will be a key focus of our investigation."