[Tuor in Gondolin]

It mat have been Shippey who suggested a gradually
increasingly serious threat by the dangers posed to
Thorin & Co. in TH. If that's the case then it could make
sense to make the troll episode fairly lighthearted,
although I must confess I've been a bit discordant to
hear their cockney accents (in light of later LOTR).

Btw, I've been listening to a series of Tolkien based
lecture tapes about fantasy literature I got at Barnes
and Noble Bookstores where the lecturer argues for
the trolls speech being a deliberate class separation
by Tolkien.