Synopsis
Colonel Brandon organised a picnic for all at Barton but was called to London at the last moment and cancelled it. Undeterred, Willoughby took Marianne for a drive by herself.
Other Archive resources

Pride and Prejudice (1980) | Clip 1
starting with a sweeping view of Pemberley gardens and ending with the 4 characters walking away down a path by the lake

Pride and Prejudice (2005) | Clip 2
starting with Elizabeth walking to a window to look out over the Pemberley lake/estate to Elizabeth's line at the Lambton Inn, 'His sister?'