- HörbuchThe Queen and Prince PhilipHelen Cathcart
- HörbuchThe Queen in her CircleHelen Cathcart
- HörbuchPrincess MargaretHelen Cathcart
- HörbuchThe Queen MotherHelen Cathcart
- HörbuchPrincess AlexandraHelen Cathcart
- HörbuchCharles Before DianaHelen Cathcart
- HörbuchLord SnowdonHelen Cathcart
- HörbuchThe Princess RoyalHelen Cathcart
- HörbuchThe Duchess of KentHelen Cathcart
- HörbuchThe Queen and the TurfHelen Cathcart
- HörbuchRoyal Lodge, WindsorHelen Cathcart
- HörbuchSandringhamHelen Cathcart
- HörbuchThe Queen HerselfHelen Cathcart
- HörbuchThe Queen and the ArtsHelen Cathcart