LadyGagarin wrote:"In certain circumstances, unclear instructions could lead to disaster.
This led to the introduction of Health & Safety legislation."
I presume it is the existence of the noun 'lead', homophonous with 'led' (past participle of the verb 'to lead') that has led to the confusion but I was referring to the present participle of the verb, not to the toxic metal.
What? I came here to be pedantic, not helpful!
Had you not explained so eloquently, one might suppose your lead to be inspired by Portia's. Have a virtual rec!