I hadn't really paid too much attention to this situation - I thought just another family drama caused when someone gets involved in a family with money (which it is) but when you actually look into it you realize how much of this is caused by Adam himself.
The original family fallout occured when he decided to include his brother's mental health struggles and history of drug use in his book to sell copies, after James started speaking to him again Adam asked him to help renovate his home which he agreed to and then they fell out again professionally (not too many details why). Then when his brother went through one of the hardest times of his life, the loss of his son, Adam skipped his nephews funeral to attend a wedding. Not the wedding of a friend of his, the wedding of a friend of Holly who, at this point, Adam had been publicly dating for a couple of months.
I'd say the relationship with the family was on its last legs from this point and the situation around the wedding was the last straw. What we know about the arrest is that James sent some angry text messages to Adam when he was on his stag do (which James had not been invited to). Adam sent these to Holly who showed them to her mother who shows them to Megan, Holly's sister who is a metropolitan police officer. Holly then made a complaint to the police which resulted in 5 police officers attending at the airport to ensure Adam's 'safety'. Which is complete overkill. James was then arrested on suspicion of harassment and had the case hanging over his head for nine months (so far) although it seems a NFA is coming soon. The public narrative is that this is because their sister has recanted her statement. However, for there to be harassment it would have been in the communications that James sent to Adam which the police have had since before the arrest was made. The fact it has dragged on for nine months can only be due to pressure being put on the police to keep the case going - harassment cases do not take this long to result in charges.
So whilst Adam is crying about how all these outside issues that were not of his doing have caused his bad run of form - it is clear everything that has occured is due to Adam and decisions that he made.
If I was James I would be writing up the SAR and will be sending it as soon as the NFA comes through - before any paperwork gets lost or destroyed.
All.imo