| Quarter-Final | Semi-Final | Final | Winner |
|---|
 | St James' Senior Girls School U19A (2) |
| | | |
#9 Mon 12-Mar-18 12:30 (Astro)
Loser placed 13th overall |
 | Moreton Hall School U19A (1) |
| | |
| Moreton Hall School U19A (6) |
| | | |
| | | |
| #17 Mon 12-Mar-18 14:30 (Astro)
Loser placed 11th overall |
 | St Helen and St Katharine U19A (1) |
| |
| | | |
| St Helen and St Katharine U19A (2) |
| | | |
#10 Mon 12-Mar-18 12:45 (Astro)
Loser placed 13th overall |
| St Helen and St Katharine U19A (4) |
| | |
 | St Albans High School for Girls U19A (1) |
| | | |
| | | |
| | #21 Mon 12-Mar-18 16:00 (Astro)
Loser placed 10th overall |
 | St Paul's Girls School U19A
(9th overall) |
|
| | | |
 | Wycombe Abbey U19A (2) |
| | | |
#11 Mon 12-Mar-18 13:00 (Astro)
Loser placed 13th overall |
| Wycombe Abbey U19A (1) |
| | |
 | St Mary's Calne U19A (0) |
| | | |
| | | |
| #18 Mon 12-Mar-18 14:51 (Astro)
Loser placed 11th overall |
| St Paul's Girls School U19A (2) |
| |
| | | |
 | St Swithun's U19A (1) |
| | | |
#12 Mon 12-Mar-18 13:15 (Astro)
Loser placed 13th overall |
| St Paul's Girls School U19A (3) |
| | |
| St Paul's Girls School U19A (2) |
| | | |
