Multi-Board Life: What Juggling Several NED Roles Actually Takes

The brochure version of portfolio life is seductive: a few days a month, three or four boards, decades of experience finally being put to broad use. Then three sets of board papers land in the same week, two audit committees clash in your diary, and a "crisis call" eats the weekend you had ringfenced.

Juggling several non-executive director roles takes more time, discipline and self-management than the headline day-count suggests — and the investors who can vote against your re-election are watching how many seats you hold. Multi-board life is less about the meetings than about everything between them.

Key takeaways

• A single UK non-executive role took a median of about 15 days in 2023/24 — below its longer-run norm of roughly 23 days — and the workload is rising: 53% of directors reported increased personal demands and 37% were working more days (MM&K).
• Investors police capacity: ISS treats more than five "mandates" as overboarding (a non-executive seat counts as one, a non-executive chair as two), and large managers vote against directors they see as overstretched.
• Independence has a clock: the UK Code's nine-year guideline means each seat has a natural end, so a portfolio must be refreshed over time.
• The hidden tax is context-switching between organisations, not the board days themselves.
• Experienced portfolio NEDs manage capacity deliberately — staggering commitments, protecting reading time, and declining gracefully.

How much time does each NED role really take?

More than the appointment letter implies. The median UK non-executive role took around 15 days in MM&K's Life in the Boardroom 2023/24 survey — a dip below its longer-run median of roughly 23 days — but the direction of travel for the workload is up: 53% of directors reported that personal demands had increased, and roughly a fifth said demands rose "significantly" for four years running.

Now multiply. Three boards at 15 to 25 days each, plus the reading and the committee work, is comfortably the better part of a working quarter — before a single unplanned event. The meetings are only the visible part: the Spencer Stuart UK Board Index 2025 puts the average board at 7.5 scheduled meetings a year, but the preparation, site visits and between-meeting calls around each one are where a portfolio quietly fills up.

How many boards is too many?

The number is not yours to set alone — your investors have a view, and they vote on it. ISS, the proxy adviser, classifies anyone holding more than five "mandates" as overboarded, counting a non-executive directorship as one mandate, a non-executive chairmanship as two and an executive role as three. A stricter view applies to directors of complex or highly regulated companies, or those chairing several key committees.

Large asset managers go further in practice: BlackRock, for example, has moved to vote against non-executive directors who sit on four or more public company boards. The lesson is not to count to a magic number, but to be able to show — to a chair, a nomination committee, or an investor — that you can genuinely serve every seat you hold.

Why multi-board life is harder than the day-count

Because the cost is cognitive, not just calendar. Each board has its own strategy, sector, personalities and history, and the real work of a portfolio NED is switching cleanly between them — arriving at each meeting with that company's context fully reloaded, not last week's other board still in your head.

"The breadth of what NEDs must manage has expanded dramatically, and boards must reflect that reality." — Ruth Cairnie DBE, Chair of Babcock International Group

That breadth is exactly what makes several roles demanding at once. When three packs arrive in the same week, the constraint is not reading speed; it is the discipline to give each company the distinct, undivided attention its decisions deserve.

What changes as you build a portfolio?

The clock starts ticking the day you join. Average non-executive tenure across the FTSE 150 is now 4.3 years, and the UK Code treats nine years as the point beyond which a director is generally no longer independent. So a portfolio is never static: seats mature, independence lapses, and the mix has to be refreshed — which means always having a sense of which role is nearing its end and what might follow it.

Portfolio life is also more normal at the top than it looks from outside: 62% of FTSE chairs hold an outside quoted-company board position (Spencer Stuart, 2025). The people who do it well are not superhuman; they are simply deliberate about capacity.

How experienced NEDs make it work

The directors who sustain several roles tend to share a few habits:

1. Know your true capacity. Count committee chairs and regulated seats as more than one "ordinary" role, the way investors do.
2. Stagger the commitments. Avoid boards whose meeting cycles and year-ends collide, so three packs never land in the same week by design.
3. Protect the reading. Block preparation time per board in the diary as if it were the meeting itself — because it is where the value is created.
4. Refresh deliberately. Track the nine-year clock on each seat and plan what comes next before you are pushed.
5. Learn to decline. The most valuable word in a portfolio career is often "no" — to the role that would tip you past what you can genuinely serve.

Multi-board life, in one line

Several non-executive roles can be one of the most rewarding chapters of a career — variety, contribution, and judgement still in demand. But the day-count is the smallest part of it. What multi-board life really takes is the self-management to know your capacity, the discipline to switch context cleanly between organisations, and the confidence to say no before "portfolio" quietly becomes "overboarded".

Enjoyed this? Browse more on the non-executive director's working life.

Notes

1. MM&K, Life in the Boardroom 2023/24 (survey of 788 boardroom positions, November 2023) — median UK NED time of about 15 days per firm a year; 53% of directors reported increased personal demands; 37% working more days; roughly one-fifth reported demands rising "significantly" for four consecutive years. https://mm-k.com/2023/11/28/life-in-the-boardroom-2023-24-are-non-executives-workloads-increasing/
2. ISS, UK and Ireland Proxy Voting Guidelines — more than five "mandates" classified as overboarding; non-executive directorship counts as one, non-executive chair as two, executive role as three; stricter view for complex, regulated or committee-heavy directors. https://www.iss-stoxx.com/file/policy/active/emea/UK-and-Ireland-Voting-Guidelines.pdf
3. BlackRock investment stewardship — has moved to vote against non-executive directors serving on four or more public company boards (reported via Directors Institute, 2025). https://www.directors-institute.com/post/overboarding-limits-evolve-how-boards-tighten-capacity-rules-in-2025
4. Spencer Stuart, 2025 UK Spencer Stuart Board Index — average NED tenure 4.3 years; average 7.5 board meetings a year; 62% of FTSE chairs hold an outside quoted-company board position. https://www.spencerstuart.com/research-and-insight/uk-board-index/trends
5. Financial Reporting Council, UK Corporate Governance Code 2024 — nine-year guideline within the independence criteria for non-executive directors. https://www.frc.org.uk/library/standards-codes-policy/corporate-governance/uk-corporate-governance-code/
6. Ruth Cairnie quote — Board Agenda, "The future board: What skills will define the next generation of NEDs?" (7 November 2025). https://boardagenda.com/2025/11/07/the-future-board-what-skills-will-define-the-next-generation-of-neds/