Amazon built an AI recruitment tool, trained it on a decade of hiring decisions, and eventually scrapped it because it systematically downgraded CVs from women. The bias was not in the algorithm. It was in the historical data.
Amazon had the resources to audit the tool, identify the bias, and make the decision to discard it. Most recruitment agencies and HR teams deploying AI hiring tools do not have those resources. And the Equality Act does not care about resources — it cares about outcomes.
If your AI screening tool is producing systematically different outcomes for candidates from protected groups, you have an indirect discrimination problem. The fact that a third-party AI made the initial decision is not a defence. The responsibility sits with the employer or agency deploying the tool.