Sure, happens all the time. Whether the next British government is prepared to discard the result of this referendum is another question. The answer is almost

Sure, happens all the time. Whether the next British government is prepared to discard the result of this referendum is another question. The answer is almost certainly no, absolutely not (considering that it'll presumably be a Conservative government led by pro-Leave politicians), but that's not the same thing as saying they'd be prepared to invoke Article 50 either. It's not impossible that they'll get so busy preparing to invoke Article 50 that they'll never actually get around to it before a new Remain government is formed. (My bet is that Article 50 will be invoked, FWIW. A true Leave believer won't be worried about it, because they think the outcome will be strongly positive. Of course, I wouldn't be the first person to wonder if Johnson is a true Leave believer, or simply an opportunist who saw a lever.)