Class 756 vs Class 231 | South Wales Metro

You can support me over on Patreon:   / chris_rail_focus   Or by joining Youtube:    / @rail_focus   alternatively if you'd like to buy me a coffee you can do so on my Ko-Fi page: https://ko-fi.com/rail_focus or by making a purchase on my Redbubble photography page: Prints, Mugs, T-shirts and much more: https://www.redbubble.com/people/EngP... BlueSky: https://bsky.app/profile/railfocus.bs... Facebook   / engineeringfocus   Twitter:   / engfocus   Instagram: www.instagram.com/engfocus Answering the very important question of, what is the Difference between Transport For Wales' Class 756 and Class 231 units? Bob's Rail Relics:    / @bobsrailrelics   South Wales Metro upgrade:    • South Wales Metro Electrification Progress   #TransportforWales #Class756 #Class231 Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/richard-smithson... License code: PJGZIRTC29PJQNOH Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/danijel-zambo/waves License code: BJU2MN4V6AWMSDXS