As in “The Playford Ball” Longways for 3 couples
Video: https://www.youtube.com/watch?v=Wpyl54cXFPk
(This Swedish video chosen because it shows the geometry pattern of the dance, though the dancers are rather wooden and trying to dance on stone pavers that are slippery!)
Recordings: shrewsbury_lasses--009.mp3.zip
shrewsbury_lasses-bnah5-06.mp3.zip

   A1 1-4 1st man slow set and honor, right, then left, to 2nd woman. 
      5-8 1st man turn 2nd woman two-hands.
   A2 1-8 1st woman the same to 2nd man.
   B1 1-2 1st couple cast down to middle place, 2nd couple moving up.
      3-6 1st and 3rd couples circle four-hands once around.
     7-10 1st man skip up outside and around top couple, 
          to end in middle place improper whlle 1st woman skip 
          down outside and around bottom couple, to end 
          in middle place, improper. 
    11-12 1st couple turn two-hands half-way.
   B2 1-2 3rd couple cast up to middle place, 1st couple moving down. 
      3-6 3rd and 2nd couples {at top} circle four-hands once around.
     7-10 3rd man skip up outside and around top couple, to end 
          in middle place, improper whlle 3rd woman skip down outside 
          and around bottom couple, to end in middle place, improper. 
    11-12 3rd couple turn two-hands half-way.
   Repeat dance twice more

See an animation of this dance SvgLogoSmall.png.

The Shrewsbury Lasses 3 couple longways

   1st man step and honour to 2nd woman; and turn her. 1st woman the same to 2nd man.
   1st couple cast into 2nd place; 1st and 3rd couples hands-4 once round. 
   1st man goes up round 2nd couple while 1st woman goes down round 3rd couple; 
   1st couple half turn into middle place.
   3rd couple cast up into 2nd place; 2nd and 3rd couples hands-4 once round. 
   3rd man goes up round 2nd couple while 3rd woman goes down round 1st couple; 
   3rd couple half turn into middle place.
   Da capo, 2nd couple leading; then 3rd couple.

The Shrewsbury Lasses 1765 3 couple set, longways

   Part        Bars        Description
   A1        4        1st man slow set and honor, right, then left, to 2nd woman
           4        1st man turn 2nd woman 2-hands
   A2        8        1st woman the same to 2nd man
   B1        2        1's cast down to middle place, 2's moving up
           4        1's & 3's circle 4-hands once around
           4        1st man skip up outside and around top couple, 
                   to end in middle place, improper while
                   1st woman skip down outside and around bottom couple, 
                   to end in middle place, improper
           2        1's turn 2-hands 1/2 way
   B2        2        3's cast up to middle place, 1's moving down
           4        3's & 2's circle 4-hands once around
           4        3rd man skip up outside and around top couple, 
                   to end in middle place, improper while
                   3rd woman skip down outside and around bottom couple, 
                   to end in middle place, improper
           2        3's turn 2-hands 1/2 way

From John Garden

Shrewsbury Lasses to own tune

A triple minor longways dance from Thompson, Twenty-four Country Dances 1765 and (text used) Thompson's Compleat Collection, vol.4, 1780.

   A1 First Man set forward to the 2d Wo. ,
      turn single back to place over r.sh. then come forward to take hs with corner 
      and turn all the way round with 8 steps, starting r.f.)
   A2 1st Wo. do the same with the 2d Man
   B  With 12 steps 1s Cast off & hands round four with 3s at bottom. 
      With 12 counts of skipping The Wo. go cw round the bottom Cu. 
      the Man cw round the top Cu. ('orbits below and above') to meet 
      improper in the middle and turn (partner with 2h 1/2 way) into 
      your own Places in progressed position, 1M, by releasing his r.h. 
      before his l.h. can open out easily to face new 2W or, when one 
      place from end of set and needing to go to the bottom, the 1M&1W 
      can let their 1/2 2h turn send them out behind and around the couple below them.

This dance was possibly used by the P&P director for the dance between Mr Collins and Lizzy as it gives Mr Collins a very good opportunity to go wrong…. but recover. The Apted editors change the dance to a 3 couple dance and has the B part repeated with