IIRC▸ the Crossrail Act required that the fares from both Shenfield and Reading to London had to stay “as they were”, ie set by the TOCs▸ rather than TfL» , so has that changed?
Paul
If you look at the TfL fares document didcotdean linked to, it explains a lot of this (sort of - keep your mud filter handy). This is the relevant statement:
Fares for journeys wholly or partly beyond Zone 6 on the new TfL Rail service to Reading
All fares on the new TfL Rail service for journeys wholly or partly beyond Zone 6 are common and inter-available with those on the adjacent GWR▸ service and are set subject to guidance from the DfT» .
The 2020 fares reflect the 2.8% DfT fares yield target and have been approved by the DfT and the Secretary of State for Transport. Details of the fares will be available on the FGW▸ web-site and the TfL single fare finder.
On ex-
GA▸ services it says "The increases shown involving Brentwood and Shenfield reflect TfL’s commitment to keep these fares aligned with those of Greater Anglia." Note that they list
PAYG▸ fares on all Liverpool Street lines as "special", though I think they are normal ones out to zone 6. Then they are more than normal fares in zones 7 (Theobalds Grove and Waltham Cross), 8 (Cheshunt), and 8 (Brentwood). Shenfield is extra-zonal and they don't give its fares, though CPAY and
Oyster▸ both work there (the current peak PAYG fare is actually £9.60).
While zone 7/8/9 fares on other lines are held, the caps for those zones have increased in line with RSP/DfT ones - presumably because the caps are defined by zone and can't be varied by line like the fares.
TfL also list slightly higher TOC fares, which I think are those used by PAYG on TOC trains where TfL don't operate too. It's not obvious what should happen where there are TfL trains but on a different line, but at Richmond (for example) the
SWR» fare to Waterloo is a TfL zone 1-4 one, while from Raynes Park it's a TOC fare.
The fares charged by GA and GWR (out to H&H) along the same route as TfL Rail are higher still, and I can't see any off-peak fares.
The place where TfL are (already) struggling to square more than on circle at once is Heathrow. The fare to Paddington is a special high one and has risen, but there is also a TfL fare to zone 1 that is higher (£12.10). They have put Heathrow in zone 6 so it gets capping at £12.80! (A peak zone 1-6 is usually £5.10).