It was definitely Guildford. The driver openly said he never repeated bell signals - the report is worth a read; the Appendix to it covers the use of the bell codes and their repetition.
www.railwaysarchive.co.uk
I'm from SR land, travelled extensively on SR trains and can clearly recall hearing the buzzer acknowledgement of the bell signal. Equally, I can remember non-acknowledgement too.
Report on the Collision that occurred on 19th August 1976 at Guildford in the Southern Region British Railways :: The Railways Archive
Archive of UK railways documents
I'm from SR land, travelled extensively on SR trains and can clearly recall hearing the buzzer acknowledgement of the bell signal. Equally, I can remember non-acknowledgement too.
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