We need @GiveMeSpanakopita ! She predicted this some weeks ago nd many of us, me very much included, thought for once she was off mark.
I think this Mail article has tacit approval from BP. If it was a Sussex leak they would need to go to BP for a statement. No such statement( 'this was a private meeting. It is not our policy to comment on the contents of such meetings." ) appears in the article.
They must have realised it would be leaked. I doubt BP did but that is just a hunch.
OTOH the BP comms guy looks genuinely startled as he spots the snapper. Possibly pap shots were not part of the deal.
The question is why? It's obvious what the Markles are up to, but anything other than a very low key family reconciliation would play very badly with the public. There are now over 7500 negative responses on the article.
Maybe it was just a fishing expedition to gather strength of public feeling?