V2

▲ = All trains call △ = Some trains call (precise timetable to be confirmed)
No.	Runs During	Western Branches																		Central Core						Eastern Branches
Reading	Twyford	Maidenhead	Taplow	Burnham	Slough	Langley	Iver	West Drayton	Heathrow Terminal 4	Heathrow Terminal 5	Heathrow Central	Hayes and Harlington	Southall	Hanwell	West Ealing	Ealing Broadway	Acton Main Line	Paddington	Bond Street	Tottenham Court Road	Farringdon	Liverpool Street	Whitechapel	Canary Wharf	Custom House	Woolwich	Abbey Wood	Stratford	Maryland	Manor Park	Ilford	Seven Kings	Goodmayes	Chadwell Heath	Romford	Gidea Park	Harold Wood	Brentwood	Shenfield
1	Peak	▲	▲	▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
2	Peak	▲	▲	▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
3	All Day	▲	▲	▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
4	All Day	▲	▲	▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
5	All Day			▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
6	All Day			▲	△	△	▲	△	△	△				▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
7	All Day										▲		▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
8	All Day										▲		▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
9	All Day										▲		▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
10	All Day										▲		▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
11	All Day											▲	▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
12	All Day											▲	▲	▲	△	△	△	▲	△	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
13	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
14	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
15	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
16	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
17	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
18	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
19	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
20	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
21	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
22	All Day																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
23	Peak																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
24	Peak																			▲	▲	▲	▲	▲	▲					▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲	▲
25	Peak																							▲^[a]						▲	▲	▲	▲	▲	▲	▲	▲	▲
26	Peak																							▲^[b]						▲	▲	▲	▲	▲	▲	▲	▲	▲
27	Peak																							▲^[c]						▲	▲	▲	▲	▲	▲	▲	▲	▲
28	Peak																							▲^[d]						▲	▲	▲	▲	▲	▲	▲	▲	▲

V1

No	Western Branch	Central Core	Eastern Branch	When
1	Heathrow Terminal 4	Heathrow Central	Hayes and Harlington Southall^[e] Hanwell^[f] West Ealing^[g] Ealing Broadway Acton Main Line^[h]	Paddington Bond Street Tottenham Court Road Farringdon Liverpool Street Whitechapel	Canary Wharf Custom House Woolwich Abbey Wood	All Day
2	All Day
3	All Day
4	All Day
5	Heathrow Terminal 5	All Day
6	Heathrow Terminal 5	All Day
7	Reading Twyford	Maidenhead Taplow^[i] Burnham^[j] Slough Langley^[k] Iver^[l] West Drayton^[m]	All Day
8			All Day
9			Peak Only
10			Peak Only
11			All Day
12	All Day
13		Stratford Maryland Manor Park Ilford Seven Kings Goodmayes Chadwell Heath Romford Gidea Park	Harold Wood Brentwood Shenfield		All Day
14	All Day
15	All Day
16	All Day
17	All Day
18	All Day
19	All Day
20	All Day
21	All Day
22	All Day
23	Peak Only
24	Peak Only
25		Liverpool Street (high level platforms)		Peak Only
26	Peak Only
27	Peak Only
28	Peak Only
Note	Some semi-fast services may skip Taplow, Burnham, Langley, Iver, West Drayton, Hanwell, West Ealing or Acton Main Line			All trains call at all stations	All trains call at all stations

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[a]

[b]

[c]

[d]

[e]

[f]

[g]

[h]

[i]

[j]

[k]

[l]

[m]