| 101 | | Uxbridge | Wycombe Marsh, Holtspur, Gerrards Cross, Denham | 05:23 | |
| 102 | | Heathrow Bus Stn | Wycombe Marsh, Holtspur, Beaconsfield New To, Gerrards Cross, Denham, Uxbridge | 05:43 | |
| X103 | | Watford Town Centre | Wycombe Marsh, Holtspur, Beaconsfield New To, Old Amersham, Amersham-on-the-Hil, Little Chalfont, Rickmansworth, Croxley Green, Watford | 05:53 | |