If all Shamasters are doing with Trek London is getting the guests, that should be enough of a worry in itself. Given that he twice *tried* to run Warp 10, eventually giving the excuse of not being able to get guests as the reason for cancelling the event, if we are to believe that he had the financial resources and best intention to run the event in the first place, his ability to attract anyone of worth from the Trek universe has been severely destroyed by his own excuses. Yet we are meant to believe that he's aquired the services of all 5 series Trek Captains for 3 days straight.
Heavens, I hate it that I'm defending him here, but...
He'd not admit it, but without a stellar lineup, the first time they were failing to sell many tickets. No tickets, no money to get big guests. The second time he planned to have it the same weekend as a major US event, so was struggling to get top rate guests.
With a major promotional company behind him, of course he has the contacts to book 4 Star Trek captains and Scott Bakula. They've all done events for him before.