9th December 2023 Bringing to a close another era of the HST story on Saturday 9th December 2023. No. 43187 'Cardiff Castle' and No. 43029 'Caldicot Castle' pass Norton Fitzwarren operating the final 2C67 08:00 Cardiff Central - Penzance 'Castle' HST diagram before HST operation is limited to Devon an Cornwall. (Photo: Brian Garrett)