X
| Class Type | Date | SailorName | Rank | FleetSize | EventName | |
| 420 | April,2018 | Niamh Harper | 1 | 28 | RYA Youth Nats 420 | View |
| 420 | March,2018 | Niamh Harper | 1 | 30 | Springs @420gbrsailing | View |
| 420 | December,2017 | Niamh Harper | 20 | 30 | EOS @420gbrsailing | View |
| RS200 | October,2017 | Niamh Harper | 24 | 30 | Endeavour Trophy | View |
| 420 | August,2017 | Niamh HARPER | 40 | 77 | 420 Euros Open | View |
| 420 | August,2017 | Niamh Harper | 1 | 21 | Nationals @420gbrsailing | View |
| 420 | August,2017 | Niamh HARPER | 34 | 109 | 420 Junior Euros | View |
| 420 | April,2017 | Niamh Harper | 10 | 44 | RYA Youths @420gbrsailing | View |
| 420 | April,2017 | Niamh Harper | 5 | 37 | Springs @420gbrsailing | View |
| 420 | March,2017 | Niamh Harper | 9 | 41 | Inlands @420gbrsailing | View |
| 420 | October,2016 | Niamh Harper | 5 | 39 | 420 Autumn @420gbrsailing | View |
| 420 | April,2016 | Niamh Harper | 22 | 37 | RYA Youths 420 | View |
| 420 | March,2016 | Niamh Harper | 36 | 45 | 420 Inlands | View |
| Handicap | February,2016 | Niamh Harper | 33 | 130 | GJW Direct SailJuice 7, Tiger Trophy | View |
| 420 | September,2015 | Niamh HARPER | 1 | RYA Scotland Youth and Junior Championships | View |