Sonia Gaddu

Senior Associate

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Sonia brings 8+ years’ experience across employment law, advising both employers and employees on complex employment matters. Her expertise includes:

  • Advising on both contentious and non-contentious matters.
  • Employment litigation: drafting Tribunal documents and representing employees in Employment Tribunal claims (unfair/constructive dismissal, discrimination claims, vicitmisation, whistleblowing and harassment), whether that is pursuing/defending claims, and working towards reaching the best possible outcome.
  • Settlement agreements: providing clear advice on the terms of any settlement agreement, and negotiating terms on behalf of the employees to reach the desired outcome. In addition, drafting settlement agreements on behalf of employers.
  • Contracts/handbooks: advising on and draft employment documents, such as contracts and handbook policies.
  • Assisting and advising on grievances and disciplinary processes in order to reach early resolutions.
  • Advising on TUPE and redundancy processes.


She was featured as Lawyer of the Week in The Times in September 2023. She was also ‘Highly Commended’ for the award of ‘Rising Star – large firm’ at the Women and Diversity in Law Awards which took place in March 2024. Prior to joining, I was previously at a leading UK and Intentional law firm.


If you have an employment law issue, please do not hesitate to contact me on sg@kilgannonlaw.co.uk.


Insights from Sinead

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September 25, 2026
From 1 January 2027 unfair dismissal protection moves to six months and the compensation cap is removed. See what employers should change now.
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September 25, 2026
From 30 October 2026, employers face liability for third-party harassment. Find out what changes and the practical steps businesses should take now.
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September 25, 2026
From 30 October 2026 employers must take all reasonable steps to prevent sexual harassment and address third-party harassment. See what to do now.
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February 3, 2026
Did the use of NHS changing room by transgender woman give rise to claims for harassment and/or indirect discrimination?
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February 3, 2026
The appeal judgment criticised the original tribunal’s handling of both disability and justification issues. The judgment indicates that employers making dismissals based on assessment of readiness for promotion, without the employee having carried out the work for the role above, will struggle to show that decision is
A person smiling at the camera, wearing a green and orange patterned top against a dark, plain background.
January 19, 2026
Ms Sanju Pal succeeds in appeal against Accenture at the Employment Appeal Tribunal – Tribunal’s reasoning on disability discrimination due to endometriosis was “wholly inadequate” and the decision could not stand
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December 18, 2025
A tribunal ruled non-binary identity does not amount to gender reassignment. Learn the legal reasoning and workplace implications with Kilgannon Law.
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December 11, 2025
A tribunal has held that the dismissal of a cleaner working two jobs and 17-hour days was fair. Learn why the decision was upheld, the key factors considered, and what this means for employers managing fatigue and safety risks.
Two people exchange documents across a desk in a bright office; one person smiles while receiving a paper.
December 10, 2025
Understand how employee share options work, the different types available, and their tax implications. Learn how share schemes can reward staff, attract talent, and support business growth.
Two professionals in business attire discuss work at a desk with a laptop and documents.
By Dominic Holmes • November 10, 2025
From 1 December 2025, ACAS early conciliation will double to 12 weeks. Discover what this change means, how it affects tribunal time limits and backlogs, and why more time may not always benefit employees or employers.