Are pubcrawls big over there like they are here. I live near Boston and there are many organized and disorganised:???: pub crawls here. I even think I heard something about a global pub crawl that was being organsied. And I'm pretty sure the term has jumped to mean more than just going from bar to bar because I know of one "pub crawl" that involved going from golf course to golf course.
Sorry, I'm not sure of the value because I don't know the popularity of the term in the UK, but it strikes me as your best one.