How NED Performance Is Measured by Leading Companies

By Adrian Lawrence FCA, founder of NED Capital · Part of the Board Governance Hub

It is a fair question, and one boards and prospective NEDs both ask: if a non-executive director does not manage the business day to day, how do you tell whether they are any good? Executives can be measured against targets and results. A NED’s contribution is more diffuse — judgement, challenge, oversight — and harder to pin to a number. Well-run boards have nonetheless developed disciplined ways of assessing it, and the approach is more rigorous, and more revealing, than simply noting who turned up. This article sets out how the best boards actually do it.

The Framework: Board Evaluation Under the UK Code

The starting point for how leading UK companies measure NED performance is the board evaluation process set out in the UK Corporate Governance Code. The Code expects the board to undertake a formal and rigorous annual evaluation of its own performance, that of its committees, the chair and each individual director — and, for premium-listed companies, to have that evaluation externally facilitated at least once every three years. This is the mechanism through which individual NED performance is formally assessed. The chair is responsible for acting on the results, which includes forming a view on whether each director continues to contribute effectively and to demonstrate commitment to the role, and using that assessment to inform whether they should be proposed for re-election. Evaluation, in other words, is not a paper exercise: it is the process by which a board decides whether each of its non-executives is still earning their place.

What Good Boards Actually Assess

Within that framework, the substance of the assessment is qualitative, and the best boards focus on the things that actually matter rather than on what is easy to count. The central measure is the quality and independence of challenge: does this director test the executive’s thinking, ask the questions others avoid, and bring genuinely independent judgement — or do they simply go along with the room? Closely related is preparation and engagement: a NED who has clearly read and digested the board papers, and who engages meaningfully between meetings as well as in them, is contributing in a way that mere attendance never captures. Boards also look at committee contribution — how effectively the director works on the audit, remuneration or nomination committee they sit on — and at the specific expertise the NED brings and how well they deploy it, whether that is financial, sector, regulatory or people knowledge. Finally, a well-run evaluation examines whether the director has maintained independence over their tenure, since independence can erode gradually as relationships deepen and the nine-year threshold approaches.

How the Assessment Is Actually Gathered

The information behind these judgements comes from several sources, and combining them is what makes an evaluation credible rather than impressionistic. The chair’s own assessment is central — a good chair observes each director closely and, in the better-run boards, holds a one-to-one conversation with each NED as part of the annual cycle. Peer input matters too: fellow directors see each other in action and can speak to whether a colleague adds value, though this has to be handled with care to keep feedback honest. Self-assessment asks each director to reflect on their own contribution and development. And an externally facilitated review, where an independent third party interviews the directors and observes the board, brings an outside perspective that can surface things an internal process misses — which is precisely why the Code expects premium-listed boards to commission one periodically. The senior independent director also has a specific role in leading the evaluation of the chair. Together these sources build a rounded picture that no single metric could.

Why Attendance Is a Weak Measure on Its Own

Board meeting attendance is the one genuinely quantifiable metric, and precisely for that reason it is often over-weighted. Attendance is necessary but nowhere near sufficient. A director who attends every meeting but contributes little is not performing well, while the value of a NED who prepares thoroughly and asks the decisive question is not captured by a percentage at all. Leading boards treat attendance as a basic threshold — a director who is frequently absent plainly cannot contribute — rather than as a measure of quality. The temptation to lean on attendance, and on other easily-counted proxies, is one of the main pitfalls in measuring NED performance, because it substitutes what is measurable for what is meaningful. The discipline of a good evaluation is to resist that substitution and to assess the harder, more important things directly.

Why Measuring NED Performance Is Genuinely Hard

It is worth being honest that this is difficult, and that even good boards find it so. NED performance is inherently qualitative, which means assessment relies on judgement and is open to subjectivity and personal bias. The contribution is often indirect — a well-timed challenge that stops a poor decision leaves no measurable trace, and its value may only become clear much later, if ever. Evaluation also touches on sensitive interpersonal territory, since directors are being asked, in effect, to appraise their peers, and boards vary in how candidly they are willing to do that. And expectations differ by company and sector, so what constitutes strong NED performance in a regulated financial institution is not identical to a fast-growing technology company. None of this makes measurement impossible, but it does mean the process has to be thoughtful, evidence-based and led by a chair willing to have honest conversations. A tick-box evaluation is worse than none, because it creates the appearance of rigour without the substance. For boards that want an external view, our guidance on when to commission an independent review is a useful companion.

From Measurement to Improvement

The point of measuring NED performance is not to produce a score but to improve the board. In the best companies, evaluation feeds directly into action: individual development where a director could contribute more, changes to board composition where a skills gap or a loss of independence has been identified, and decisions about re-election and succession. This is where measurement earns its keep — it is the evidence base for keeping the board effective over time, ensuring that each non-executive is still adding value and that the board as a whole has the balance of skills and independence it needs. Measuring a NED’s performance well, in other words, is inseparable from the wider work of keeping a board strong. It is also why the quality of the initial appointment matters so much: a rigorous, well-judged search puts directors on the board who will stand up to exactly this kind of scrutiny.

At NED Capital we help boards appoint non-executive directors who perform against these measures — genuinely independent, well-prepared, and equipped to contribute in and beyond the boardroom — and we assess candidates against exactly the criteria a good evaluation would later apply. Every search is led personally by Adrian Lawrence FCA, a Fellow of the ICAEW and former listed-company finance director.

NED Capital | Sister practice of FD Capital | ICAEW practising certificate held by Adrian Lawrence FCA.