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12 June 2026
Issue: 8165 / Categories: Legal News , Profession , Constitutional law , International , National security
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NLJ this week: Mandelson affair exposes constitutional fault lines

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The fallout from Lord Mandelson’s appointment and dismissal as UK ambassador to Washington raises profound questions about constitutional governance, accountability and political appointments

Writing in NLJ this week, Professor Graham Zellick KC argues that the affair was marked by 'abuse of authority and procedural irregularity'. Examining the appointment through the Constitutional Reform and Governance Act 2010, he contends that powers vested in the foreign secretary appeared to be exercised instead by No 10.

The article also scrutinises the handling of security vetting, highlighting concerns that key decisions were taken without proper documentation or oversight.

While political appointments to ambassadorial posts are legally permissible, Zellick questions whether they should continue at all, noting their rarity and potential to undermine the non-political nature of the diplomatic service. Ultimately, he argues that failures of judgement, rather than legal complexity, lay at the heart of the 'Mandelson imbroglio'.

MOVERS & SHAKERS

mfg Solicitors—Samantha Evans

mfg Solicitors—Samantha Evans

mfg Solicitors strengthens Contentious Probate team with new appointment

Ocean Legal—Brodie Collar

Ocean Legal—Brodie Collar

Ocean Legal welcomes new associate Brodie Collar

Ward Hadaway—Helen Badger & Gemma Lynch

Ward Hadaway—Helen Badger & Gemma Lynch

Ward Hadaway expands healthcare employment team with two partners

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