A report on the executive’s findings says: “None of the points inspected were judged to be in the condition found at Potters Bar. However, in one area such was the condition of the points that formal enforcement action was instigated.”
A spokesperson for the HSE confirmed that the notice was issued to Carillion Rail.
The report also revealed that the Potters Bar accident, in which seven people died, resulted from missing nuts on track stretcher bars.
Furthermore, the report noted that a sample survey of nuts on stretcher bars of other points in the region showed that 20% were not tightened properly.