I absolutely believe she abused him. She threw a vodka bottle at him and took the top of his finger off. There are loads of pictures of him with bruises and cigarette burns on him taken by (neutral) third parties.
What she did to him was many degrees more serious than anything which there is objective evidence of him doing to her; there are no objective witnesses to him ever physically abusing her, whereas there is evidence her own sister thought she was abusive to him. I her I also think if he had hit her - certainly if he had hit her in the way she claims, three day hostage situation etc - he would have hurt her quite badly, and it would not have been coverable on TV with make up as she claims.
She has a previous history of having been arrested for partner abuse; there was a line of previous partners for him volunteering that he wasn't like that with them.
He has given a lot of money to Great Ormond Hospital; she claimed she'd given her divorce settlement away but hasn't actually done so (I believe she's untruthful).
I initially believed her, just as a default because I believe women don't make up stories about abuse. But at the start of 2021(?) when the tapes hit the internet I listened to the recordings and she both admits to hitting him and says nobody will believe him claiming to be a victim of domestic abuse. She sounded absolutely like an abuser to me.