TL quote taken from his first post:
'Ultimately I have in fact now entered into this "exclusivity agreement" on behalf of ONE client only. And myself, Matt and others involved are very pleased with that. Gone are the days of petty squabbles. Our one client has SUBSTANTIAL wealth - several hundred million.'
Doesn't refer to a single person but to 'one client only', which I take as a consortium that is formed under a legal agreement rather than a group of individuals. But I could be wrong.