Where was Clive in July 2021?

In late July 2021 my wife bought me a 7-day All Lines pass and I went for a week's wandering around the network. Here are 41 photos I took, in no particular order. Can you work out where they are?

Just to prevent it being too easy, I've blanked out signal ID plates and a couple of signs.

(Clicking on the picture gives you a bigger version.)

Question 01

Answer: Barrhill

Question 02

Answer: (not guessed) Sugar Loaf

Question 03

Answer: Morfa Mawddach

Question 04

Answer: (not guessed) Whitland

Question 05

Answer: Huntingdon

Question 06

Answer: Pwllheli

Question 07

Answer: Barmouth Bridge

Question 08

Answer: Stirling

Question 09

Answer: King Edward Bridge, Newcastle

Question 10

Answer: Whitland

Question 11

Answer: Shrewsbury

Question 12

Answer: Alloa

Question 13

Answer: Ormskirk

Question 14

Answer: Tyndrum

Question 15

Answer: Radyr

Question 16

Answer: Tenby

Question 17

Answer: Aberdare

Question 18

Answer: Carmarthen

Question 19

Answer: Blaenau Ffestiniog

Question 20

Answer: Talsarnau

Question 21

Answer: Porthmadog

Question 22

Answer: Dalmally

Question 23

Answer: Dalry

Question 24

Answer: Newport

Question 25

Answer: Dunragit

Question 26

Answer: Stranraer

Question 27

Answer: Barmouth

Question 28

Answer: Dovey Junction

Question 29

Answer: Kilmarnock

Question 30

Answer: Pembroke Dock

Question 31

Answer: Loch Awe (Kilchurn Castle)

Question 32

Answer: Crianlarich

Question 33

Answer: Adrossan South Beach

Question 34

Answer: Pembroke Dock

Question 35

Answer: Glenrothes with Thornton

Question 36

Answer: Weymyss Bay

Question 37

Answer: Betws-y-Coed

Question 38

Answer: Blaenau Ffestiniog / tunnel

Question 39

Answer: Llandecwyn

Question 40

Answer: Craigendoran

Question 41

Answer: Carmarthen