When Darcy mentions to Elizabeth (in Chapter 43) that he rode ahead of the rest of the party, he says, "They will join me early to-morrow," he continued, "and among them are some who will claim an acquaintance with you -- Mr. Bingley and his sisters." [emphasis mine]

I take this to mean that there are more people in this party of friends, but these are the ones who are acquainted with Elizabeth. Though I don't know why he didn't mention Mr Hurst. Hmmm. :-)