| 1972 | e Island Duke CSB 208, NPS 4978 | - Chiltern Yoben NPS G 431 |
| 1973 | e Island Duke CSB 208, NPS 4978 | - Chiltern Froniga NPS 15563 |
| 1974 | e Island Duke CSB 208, NPS 4978 | - Chiltern Glencora NPS 16006 |
| 1975 | e Island Duke CSB 208, NPS 4978 | - Bryony III NPS 16511 |