Flying Scotsman

Formation: Sets of four couples. Two lines with partners facing each other, labeled 1s and 2s.
Bars:
Instructions:
1-8:
1s join hands and the top person leads the line round the back of the 2s and then weaves in and out down the line and back up to their original places.
9-16:
2s repeat.
17-24:
Top couple set forward and join hands and side step down the middle of the lines using long steps then back up to join the end of the set using small steps.
25-32:
All couples now join hands and side step down for 8 and back for 8, resulting in a new top couple.