The document relating to public operations (the “rule book”, May 2026 update) may be found here
HS2020 may be found here
Risk Assessments are as follows
ndsme-ra-03_Use of Machine Tools
ndsme-ra-04_Recertification of Boilers
ndsme-ra-05_Use of tracks – private
ndsme-ra-06_Ground Level track, public use.