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Nicholas Siddall KC

Nicholas Siddall KC

Silk: 2019 | Call: 1997

King's Counsel

"Nick is a brilliant advocate. He really gets to grips with the detail of a case and uses this to make clear, concise and compelling submissions. He has a charming style that judges appreciate."

Legal 500 2026

"Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims."

Chambers UK 2025

"Nicholas is excellent."

Chambers & Partners 2025

"Nicholas is exceptional in all areas."

Chambers & Partners 2025

"Clearly an expert in employment, with bags of experience and knowledge. He's client-friendly, commercial and quickly builds a rapport with the client."

Chambers & Partners 2025

"An exceptional all-rounder. His intellect and ability to quickly grasp the issues in a case are unparalleled."

Legal 500 2025

"He immediately focuses in on the issues that matter and is very user-friendly. Clients love him. He has the ability to distil complex points quickly and get to the key issues. He is particularly good on whistle-blowing claims."

Chambers & Partners 2024

"Nicholas is sharp as a razor; very tactical, not afraid of a fight, and has the experience to see the downsides to balance the upsides."

Chambers UK 2024

“Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims."

Chambers UK 2024

"Brilliantly smart and focused. Always in charge; his preparation is second to none."

Chambers UK 2024

"A silk who oozes confidence and intelligence, which is reassuring for both clients and instructing solicitors."

Legal 500 2024

"He is on the ball, he is phenomenally intelligent, clients get on well with him and he is a safe pair of hands." "He is one of my go-to people if I need a big hitter; I particularly like him for discrimination, TUPE cases and really technical matters. He is a very strong advocate and he is a very likeable person." "He is forensic and considered, which allows him to conduct careful analysis for clients."

Chambers & Partners 2022

"Nick is intensely intelligent and has a photographic memory for case law. His written advice is well structured and reasoned. He has a confident ability when dealing with clients."  "He is technically very good; a powerful, commanding advocate and an impressive all-round character."

Chambers & Partners 2022

"Technically excellent, with the ability to digest complex facts of the case and apply to the relevant law in a user-friendly way. Always willing to take a call and very client friendly."

Legal 500 2022

"Superb – his warmth and personality are great assets for this type of work. He is decisive, does not sugarcoat, and is not afraid to tell a client how it is. He is also unflappable and very good on his feet."

Legal 500 2021

"Has notable experience with TUPE, along with high-value discrimination claims and public interest disclosure cases. He is predominantly instructed on behalf of respondents but also works with trade unions and high net worth claimants. He is recognised for his expertise in defending applications for injunctive relief. Strengths: "He is wonderful – an employment law obsessive. He takes a scholarly approach to the law, and is genuinely interested." "Great focus and attention to detail. Client witnesses invariably say they that they are pleased that he is on their side rather than the opponent's."

Chambers UK 2021

"He has a high level of technical knowledge, is hard-working and has great attention to detail. He's user-friendly in terms of the client and his approach. He's happy to bring a proper fight to cases and is good on his feet."

Chambers UK 2020

Nicholas Siddall KC

"Nick is a brilliant advocate. He really gets to grips with the detail of a case and uses this to make clear, concise and compelling submissions. He has a charming style that judges appreciate."

Legal 500 2026

"Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims."

Chambers UK 2025

"Nicholas is excellent."

Chambers & Partners 2025

"Nicholas is exceptional in all areas."

Chambers & Partners 2025

"Clearly an expert in employment, with bags of experience and knowledge. He's client-friendly, commercial and quickly builds a rapport with the client."

Chambers & Partners 2025

"An exceptional all-rounder. His intellect and ability to quickly grasp the issues in a case are unparalleled."

Legal 500 2025

"He immediately focuses in on the issues that matter and is very user-friendly. Clients love him. He has the ability to distil complex points quickly and get to the key issues. He is particularly good on whistle-blowing claims."

Chambers & Partners 2024

"Nicholas is sharp as a razor; very tactical, not afraid of a fight, and has the experience to see the downsides to balance the upsides."

Chambers UK 2024

“Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims."

Chambers UK 2024

"Brilliantly smart and focused. Always in charge; his preparation is second to none."

Chambers UK 2024

"A silk who oozes confidence and intelligence, which is reassuring for both clients and instructing solicitors."

Legal 500 2024

"He is on the ball, he is phenomenally intelligent, clients get on well with him and he is a safe pair of hands." "He is one of my go-to people if I need a big hitter; I particularly like him for discrimination, TUPE cases and really technical matters. He is a very strong advocate and he is a very likeable person." "He is forensic and considered, which allows him to conduct careful analysis for clients."

Chambers & Partners 2022

"Nick is intensely intelligent and has a photographic memory for case law. His written advice is well structured and reasoned. He has a confident ability when dealing with clients."  "He is technically very good; a powerful, commanding advocate and an impressive all-round character."

Chambers & Partners 2022

"Technically excellent, with the ability to digest complex facts of the case and apply to the relevant law in a user-friendly way. Always willing to take a call and very client friendly."

Legal 500 2022

"Superb – his warmth and personality are great assets for this type of work. He is decisive, does not sugarcoat, and is not afraid to tell a client how it is. He is also unflappable and very good on his feet."

Legal 500 2021

"Has notable experience with TUPE, along with high-value discrimination claims and public interest disclosure cases. He is predominantly instructed on behalf of respondents but also works with trade unions and high net worth claimants. He is recognised for his expertise in defending applications for injunctive relief. Strengths: "He is wonderful – an employment law obsessive. He takes a scholarly approach to the law, and is genuinely interested." "Great focus and attention to detail. Client witnesses invariably say they that they are pleased that he is on their side rather than the opponent's."

Chambers UK 2021

"He has a high level of technical knowledge, is hard-working and has great attention to detail. He's user-friendly in terms of the client and his approach. He's happy to bring a proper fight to cases and is good on his feet."

Chambers UK 2020

Contact

Nicholas specialises in Employment and Industrial Relations Law both in the statutory tribunals and High Court. He also undertakes work in the fields of disciplinary and regulatory issues and of sports related litigation. He also enjoys a significant investigatory practice.

Nicholas undertakes work on behalf of both employers and employees. He was regularly instructed by a number of Trade Unions including the UDM, the BMA, BALPA, ASCL and Nautilus.

According to Chamber and Partners 2025 “Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims.”

“Nicholas is excellent.”

“Nicholas is exceptional in all areas.”

“Nicholas is a masterful advocate.”

“Nick masters the factual background excellently and is very smart and tactical. He focusses swiftly on the key issues and is very user-friendly in sensitive cases.”

“Clearly an expert in employment, with bags of experience and knowledge. He’s client-friendly, commercial and quickly builds a rapport with the client.”

According to Chambers and Partners 2024 “Nicholas Siddall KC is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims.”

“Nicholas is sharp as a razor; very tactical, not afraid of a fight, and has the experience to see the downsides to balance the upsides.”

“Brilliantly smart and focused. Always in charge; his preparation is second to none.”

According to Chambers and Partners 2023, Nicholas “is a highly skilled silk who is widely praised for his client service. He regularly appears in the Employment Tribunal and the High Court on behalf of claimants and respondents, handling both discrimination and commercial employment claims.”

“Nick oozes intellect and controlled aggression combined with superb client handling.”

“His preparation and attention to detail is excellent. He always goes the extra mile to make the difference in the cases he takes on.”

According to Chambers 2022 “He is on the ball, he is phenomenally intelligent, clients get on well with him and he is a safe pair of hands.” “He is one of my go-to people if I need a big hitter; I particularly like him for discrimination, TUPE cases and really technical matters. He is a very strong advocate and he is a very likeable person.” “He is forensic and considered, which allows him to conduct careful analysis for clients.”

and

“Nick is intensely intelligent and has a photographic memory for case law. His written advice is well structured and reasoned. He has a confident ability when dealing with clients.” “He is technically very good; a powerful, commanding advocate and an impressive all-round character.”

According to the Legal 500 2026 “Nick is a brilliant advocate. He really gets to grips with the detail of a case and uses this to make clear, concise and compelling submissions. He has a charming style that judges appreciate.”

According to the Legal 500 2025 “Nicholas Siddall KC is ‘a charming advocate, able to win over judges’.”

According to the Legal 500 2021 Nicholas is “Technically excellent, with the ability to digest complex facts of the case and apply to the relevant law in a user-friendly way. Always willing to take a call and very client friendly”

According to Chambers and Partners 2021, Nicholas “”He is wonderful – an employment law obsessive. He takes a scholarly approach to the law, and is genuinely interested.” “Great focus and attention to detail. Client witnesses invariably say they that they are pleased that he is on their side rather than the opponent’s.”

According to the Legal 500 2020 Nicholas is “‘Superb – his warmth and personality are great assets for this type of work. He is decisive, does not sugarcoat, and is not afraid to tell a client how it is. He is also unflappable and very good on his feet.’”

In the 2017 and 2018 Thomson Reuters Reports entitled “What do clients want from the Bar?” Nicholas was listed in the section “What barristers were respondents most impressed with?” as follows: “Very good on his feet in tribunal, good with clients, and works as a team with instructing solicitors”

Nicholas also has a niche practice in the Employment Tribunals and High Court of the Isle of Man where he appears and prosecutes claims across the full breadth of their jurisdictions. He was instructed on a matter seeking to explore the extent of the statutory whistleblowing/discrimination protection on the Island and the scope of their interaction. He was also certificated to appear in the High Court of the Island on a 15 day wrongful dismissal hearing. He was successfully instructed by the Manx Industrial Relations Service to advise on an appeal as regards the legal effect of the statutory provisions that govern settlements on the Island. He was instructed to defend a part time worker detriment claim brought by the former Appeal Judge of the Isle of Man as regards his pension provision. He also secured an interim injunction to secure the return to work of a doctor wrongly excluded from his NHS practice on the Island. He recently advised a teaching union as to the lawfulness of its proposed strike action on the Island. He was recently instructed by the Department of Transport on a collective claim brought by a series of bus drivers who contend that they have been unlawfully induced to give up their rights to collective bargaining.

 

Statutory Employment Practice

Internal Investigations

Injunctive/High Court Practice

Statutory Discrimination Claims in The Civil Courts

Disciplinary and Regulatory Practice

Sports Law Practice

Memberships

Career & Education

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