Princess Anne at 30, talking royal life (1980) 

These are excerpts from a 1981 documentary about the daughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh: Princess Anne: Her Working Life (uploaded to this channel years ago). This is a compilation of most (not quite all) of HRH's interviewed, conversational, and voiced-over parts from that documentary.
00:00 Zara's christening day
00:16 On her children
00:53 On the press
02:46 On writing speeches
03:06 On being a Counsellor of State
03:40 On ceremony & change
04:11 Speaking in Fiji
05:09 On ladies-in-waiting
06:06 On being chancellor of London University
07:45 On presiding over a graduation
08:37 Preparing for Gatcombe Horse Trials
10:03 On charity involvement
10:41 On putting a pony in a Range Rover
11:18 Riding for the Disabled Association
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British royal family - monarchy - Gatcombe Park - Peter Phillips - Zara Tindall - Erin Doherty comparison - The Crown comparison - Gloucestershire - England - Suva