Oh please, he's not going to be so brazen as to try that right off. Not with you so edgy and suspicious of his every move. Julian might not be the best at subterfuge, but he's fairly sure pulling such a juvenile mistake would have his spymaster Cardassian friend on him even from eight years and half the Alpha Quadrant away.

"Offering you tea." Obviously. He's British, it's just about standard protocol for any situation, especially ones where he has not the foggiest idea what to say. He's not going to let you out of here until cooler heads prevail, and so you might as well make yourself comfortable.

He sips at his cup first, as if to say 'see? No sedatives.' He'd need something strong enough to down a mammoth to even make you drowsy anyway, anything strong enough is going to taste awful.