The film that appeared on the BBC with the commentary " miners charging the police" was I presume taken by BBC cameras. It was filmed from behind the police as was most of the other news footage. I have no idea what you mean by an official film crew. As this was a major strike a number of news organisations from the UK and abroad were involved. At that time the concept of an "independent" film crew selling stuff to the BBC would have been most unusual particularly when they would have had a national (ie crew from London) and the regional team. The same would go for ITV. Channel Four had subcontracted their news to ITV.
By the the time the BBC's film footage was shown on the news it had been cut and spliced to show the miners advancing first and the police seeming to respond in self-defence. BBC presenter Moira Stewart had opened the coverage with an image of a miner kicking a policeman.
Arthur Scargill was both arrested and injured on the 13 June, and he was shown saying that he thought he had been hit over the head with a riot shield. This was denied by a policeman, saying he had seen Scargill fall down a bank and hit his head on a sleeper. Assistant Chief Constable Clement told the media that Scargill, "could not possibly have been hit on the head by a shield-carrying officer on the bank, as they stayed on the road", adding, "I'm not lying about this". He was, of course. Pictures later released showed Scargill clearly receiving his injury from an assault by a policeman, as a group of them charged miners, with their shields, on the bank.
From the Memoirs of a Radical Lawyer by Michael Mansfield: Mansfield had the task of cross-examining Assistant Chief Constable Anthony Clement, the senior officer on the day. Clements told the court that Arthur Scargill had been at the scene orchestrating trouble, that the use of horses had been justified to break up a push by the miners, and that when the police horses had approached the sky had darkened with missiles thrown at them by the miners.
Unknown to the prosecution, the defence had managed to get access to the police's own video footage of the clash. Mansfield showed it. Within minutes Clement was shown to have lied at every point. Soon after, the prosecution decided not to proceed with the charges.
Just in case you've forgotten the film shown on the BBC was taken and edited by the BBC. So what's your point?
"I before E, except after C" works in most cases but there are exceptions.