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Gary Henderson

Work 020 7071 7320

Work Department

Litigation/employment (TVO).


Gary has specialised in employment law for over 20 years.

He advises clients across the whole range of business sectors providing advice on all aspects of employment law, both contentious and non-contentious, including executive engagements and dismissals, employment tribunal litigation, discrimination issues and the employment aspects of acquisitions and disposals, corporate reorganisations and outsourcing arrangements. 

He also advises on the formulation and implementation of employment strategy and policy, the employment law implications of business initiatives (including reorganisations) and the impact of new legal developments. 


Qualified 1988; joined Olswang in 2002 as a partner. Gary qualified in 1988 and was awarded the City of London Solicitors Company Prize for being placed 1st in the City in The Law Society Solicitors’ Final Examinations. He joined Olswang in June 2002 as a partner, having previously been at Slaughter and May and Andersen Legal – Garretts.


Employment Lawyers Association.

South East: Human resources

Employment: Thames Valley, Berks, Oxon, M4/M40

Within: Leading individuals

Gary Henderson - CMS

Within: Employment: Thames Valley, Berks, Oxon, M4/M40

CMS acts for multinational companies such as Liberty Global and Biogen on a range of matters, including data protection issues and domestic and international reorganisations. The firm also services clients through CMS Law Now, a resource that enables employers to stay up to date with changes in employment law. Gary Henderson leads the team and has been handling HR training, exit arrangements and pensions advice as well as tribunal claims and senior-level hires for energy, entertainment and technology sector companies. Also recommended are senior associates Rachel Zani, Jenny Grogan, Edward Arnold and Anita Wisby; the latter is also a part-time employment judge.

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Legal Developments by:

  • Access to justice: protective costs orders in planning challenges

    Third parties and competing developers have no rights of appeal to the Secretary of State against planning decisions. Disappointed applicants can appeal to the Secretary of State and can have the merits of the application reconsidered. The only remedy available to a disappointed third party is a challenge by way of judicial review in the High Court on a point of law. The sense of frustration and disempowerment this creates has not been helped by the increasing complexity of the planning process and the use of consultation to legitimise decisions that many perceive may already have been taken.
    - CMS Group

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