That was his fault. He quickly pulled his hand away and decided not to ask any further. The young man was still probably anxious after his presentation. Nerves and all. Or he was nervous talking to him. He couldn't blame him, he knew he had an intense sort of look about him. It's why he trained the new recruits.
"C'mon, it'll be my treat." He was still a gentleman after all. He didn't expect someone younger to pay for him. (Unless it was Eggsy, but that would only be in jest.)
So he's worked on computers since he was young? It couldn't be just that. He'd play along, hoping to learn a bit more. "That's all? No one taught you? You're really gifted with computers."
He lead Elliot over to the bar, where he took a seat at the counter. "A pint of Guinness and- what'll you have, lad?"