It would appear, from information on bustimes.org, that there will be a number of route and timetable revisions effective 01st September. Among these changes will be, it appears, the splitting of Service 21/21A with a new 21B taking the Barnstaple - Ilfracombe section and a route revision to the 4 in Exeter. Anyway details I can find are as follows:
Tavistock & Okehampton:
New route: 6B
Route variation only: 87 (inbound)
Timetable variations only: 5, 5A, 5B, 6, 6A
Barnstaple, Bideford & Tiverton:
New route: 21B
Route and timetable variations: 21, 21A, 315A
Timetable variations only: 10, 14, 15, 19, 24, 55, 71, 75, 155, 301, 315, 346, 351, 372, 373,, 663S
Torbay:
Timetable variation: 12, 53
Route and timetable variation: 23
Exeter & Exmouth:
New route: K
No details to clarify revision: F, I, J, R, S, 1, 1A, 98, 98A, 98E, 157, 178, 357
Timetable variations only: A, B, C, E, 58, 95, 97, 99, 358, UNI
Route and timetable variations: P, 4, 4A, 44, 44A, 57, 96, 360
Notes on the above:
Barnstaple:
19 (Barnstaple - North Devon Hospital):
Registration is for "revision of evening journey times between Bus Station and North Devon District Hospital to interwork with new evening 21/21A timetables" which suggests that the 21 & 21A will be operating to / from NDDH on evening journeys: nothing in registration about daytime journeys.
21, 21A (Ilfracombe - Westwood Ho! / Appledore)
21B (Barnstaple - Ilfracombe / Georgeham)
Registration is for a "redesign on the 21/21A timetables to operate between Barnstaple and Westward Ho! Or Appledore respectively" and a separate Service 21 registration for "addition of 00:00 Barnstaple to Bideford journey to replace 00:05 journey withdrawn for the winter season for the last day of operation on 7th September." There are also changes to schoolday journeys on the 821 & 921 and the introduction of new 21B service between Barnstaple Rail Station and Ilfracombe.
315 / 315A: the details for the changes on these routes is the same in both registrations.
Tavistock:
For the 6B, which is specified as Tavistock to Okehampton via. Mary Tavy, the registratiopn says that the 6B will provide "one journey in each direction Monday to Friday between Tavistock and Okehampton. In the morning, there will be a journey at 0840 from Tavistock to Okehampton. In the afternoon, there will be a journey at 1420 from Okehampton to Tavistock" and that the 6B will connect with 6A journeys to & from Exeter for which there is a separate registration.
Exeter:
The exact changes to the 44 & 44A are unclear. The 4 is given as having a timetable revision only with the route and timetable change for the 4A but the 4 is given as running from "Pennsylvania North Park Road" which is in the Exeter University campus while the 4A continues to serve St. Davids.
It would seem that the changes to the P might relate to the new Service K: the latter is registered as "Cowley Bridge to Pennsylvania via. Exeter City Centre" suggesting that the K replaces the northern part of Service P. It is possible that the new K may be the reason behind the changes to the F which currently serves Cowley Bridge.
Full list of routes indicating effective date for changes:
HTIOI,
Dave