Correct answers so far:
01
BRI» (chris from nailsea)
02 Dawlish (old original)
03 Highbury Vaults (bignosemac)
04 Minehead (molinnis)
05 Dublin (Bob_Blakey); St Stephen's Green Station
06 Cell 141 1117-1134 (inspector_blakey) i.e. Brucey squashed in-between two seats and another passenger
07 Montpelier (chriselkins)
08 The Chipper on Upper Maudlin Street (chris from nailsea)
09 Poole (paul7755)
10 Wills Memorial Building (devon_metro)
11 Bristol Temple Meads (devon_metro)
12
13 Lynton (Bob_Blakey)
14
15 Havant (paul7755)
16 Bristol Temple Meads (Mookiemoo)
17
18
19 Stapleton Road (chris from nailsea)
20 Redland (molinnis)
21
22 South Kensington (grahame)
23
24 Bristol Temple Meads (Mookiemoo)
25 Lynton looking down to Lynmouth (molinnis)
26
27 Dunster (Deltic)
28 Clifton Down (bignosemac)
29
30 Minehead (jakemonkfish)
31
32 London Victoria (Ollie)
33
34 South Kensington Pelham Street Entrance (plymothian)
35
36 Bristol Temple Meads (grahame)
37
38 Arnolfini (bignosemac)
39
40 Excess badly issued (Ollie)
28. Clifton Down Station. Taken from the steps down to platform 2.
I was trying to date the "City-Severn Line" sign. I reckon its probably from the 80s?