Just cancelled:
Le Cellier, 4 guests, 15 Oct, 2050
Le Cellier, 2 guests, 15 Oct, 1620 (this was what I picked up so I could cancel the above)
Le Cellier, 4 guests, 15 Oct, 1600 (this was what I picked up to fix the mistake above and can now cancel as by cancelling the above the same time came back)