The Room Without Them: A Boardroom Rehearsal for Continuity of Judgement

The crisis we do not rehearse

Most UK boards now have a crisis rehearsal in the calendar. Cyber, liquidity, supply shock, reputational failure: each has a scenario, a facilitator and a set of lessons captured afterwards. Fewer boards, however, rehearse the quieter disruption that arrives without a headline. A chair resigns. A finance director is signed off for three months. A committee chair declares a conflict of interest at the worst possible moment. The seat is empty, and the board discovers that its continuity arrangements were a document rather than a discipline.

The empty chair test is not a succession plan by another name. It is a judgement exercise. The question is not simply who would step in, but whether the board could still decide well: with the same authority, the same memory of past reasoning and the same ability to challenge management without the person who usually carries that challenge.

Why absence tests something different

A crisis rehearsal asks how the board responds to an event. An absence rehearsal asks how the board continues to govern when a role, not an event, is missing. Those are different tests. Crises tend to mobilise people; absence exposes the gaps that were already there. Decision rights that sit with an individual rather than a committee. Quorum arrangements that assume a particular combination of people. Institutional memory held in a diary and a set of personal relationships rather than in board papers.

The Companies Act and the UK Corporate Governance Code provide the architecture, but they do not supply the judgement. A board can be fully compliant and still unable to explain why a previous strategy was abandoned, which regulator expectations are informal rather than written, or why a long-standing customer relationship survives only because one director knows its history. The empty chair test surfaces those dependencies before a real departure forces the issue.

The sixty-minute exercise

Design matters. The chair and company secretary should select one executive role and one non-executive role. The exercise should be framed as continuity of judgement, not as a performance review or a signal that someone is about to leave. The materials are simple: the current delegation of authority, committee terms of reference, the board skills matrix and an index of the last twelve months of board papers. No new binder is required.

First fifteen minutes: name the empty chair

Describe the vacancy in factual terms. The role is vacant from a given date. Which decisions would be paused, delegated or escalated? Which meetings would lose their chair? Which committee would fall below quorum? The board should produce two lists: decisions that must still be taken, and decisions that would lose their author. The second list is usually longer than expected.

Second fifteen minutes: trace the decision path

Take three live decisions on the current board agenda. For each, ask who sponsors it, who challenges it and who signs it off. If the selected role were vacant, what would change? This is where the board discovers whether authority is structural or personal. A chair who always leads the challenge on capital allocation is not a committee; they are a single point of failure. A finance director who is the only person able to explain a covenant test is not a control; they are a dependency.

Third fifteen minutes: test the memory

Ask what the absent role knows that is not written down. The history of a customer relationship. A regulator's informal expectations. The reason a previous acquisition was abandoned after a single board meeting. This is institutional memory, and it rarely lives in the board pack. The board should create a short memory register: not a knowledge repository, but a list of relationships and unwritten context that a successor would need in their first month.

Final fifteen minutes: agree the smallest useful changes

The temptation is to commission a new succession framework. Resist it. The useful outputs are small and specific. Revise a delegation of authority so that a decision is committee-owned rather than person-owned. Add a deputy to a committee where quorum is fragile. Change the board paper format so that the reasoning behind a decision is recorded, not only the decision itself. Schedule a second rehearsal for a different seat. Assign an owner and a date to each adjustment.

Facilitation: keeping it honest

The chair sets the tone. The exercise should not become a coded assessment of individuals. Use roles, not names. Do not discuss potential successors in the room; that conversation belongs to the nomination committee and should follow proper process. The company secretary should record structural findings, not personal observations, to reduce political sensitivity. If the board cannot resist naming people, the exercise has drifted into performance review and should be stopped.

What good looks like

A board that passes the empty chair test can still reach quorum, take decisions and explain them. A successor would inherit a map rather than a mystery. The test is not whether the board could survive a departure. It is whether the board could still decide well with an empty chair at the table. That is a higher standard, and a more useful one.

The discipline, not the document

Repeat the exercise annually, or whenever a role changes. The output is a short set of adjustments, not a binder. In 2026, as UK boards face continuing scrutiny on resilience, succession and the quality of boardroom judgement, the empty chair test offers something more valuable than a plan. It offers a rehearsal. The board does not merely ask who would sit in the chair. It asks whether the room could still think without them.