ac2kuk:
66957 trails 66592 passing through Soham with an Ipswich to Whitemoor light engine working
ac2kuk:
69007 leads 4H98 away from March, this being the first time a 69 was trialled on the Middleton Towers sand diagrams hence 66789 being DIT for insurance, 69s would go on to dominate these workings throughout 2024