Mark Greenlees



Mark has significant experience of all aspects of pensions law developed over 30 years of practice. His clients include the trustee boards of several large and high profile schemes in the financial, manufacturing, pharmaceutical and utility sectors.

Mark has been involved in some of the most innovative transactions of recent years including the transfer of over £28.5bn of assets from the Royal Mail Pension Plan to the UK government.

Mark was the Chairman of the Association of Pension Lawyers from 1997 to 1999 and is a former Chairman of its Legislative and Parliamentary Sub Committee. He also served on the Council of the Society of Pension Consultants and is a past Chairman of its Legislation Committee.

Memberships and Qualifications

Membership of professional bodies:
Association of Pension Lawyers (Full Member)

Career history

Qualified: 1979, England & Wales

Pensions experience since: 1979

Joined Sackers: 1977

Joined partnership/LLP: 1982

Academic history


Lincoln College, University of Oxford (1972 – 1976)

Degree: BA Oxon (Jurisprudence)

Further Information


  • Mark Greenlees has “a broad range of knowledge and expertise, is pragmatic yet determined and is able to assess risks and focus his help to specific problems,” notes a commentator. He advises on a wide range of issues facing pensions schemes and he works for clients in variety of sectors including financial services, manufacturing and pharmaceuticals – Chambers UK 2019
  • One impressed client says that Mark Greenlees “is the best pensions lawyer I’ve come across,” because “he is extremely client-focused with vast knowledge and experience, very easy to work with and personable.” He advises trustee boards on a full range of pensions issues – Chambers UK 2018
  • Mark Greenlees is a leading pensions lawyer in London. He is known for providing high-quality advice to trustee boards, especially in the financial services and pharmaceutical industries. Clients value his “calm and collected” manner and his pragmatic approach – Chambers UK 2017
  • Leading lawyer – Legal 500 2017, 2016 and 2015
  • The highly experienced Mark Greenlees is widely considered to be among the foremost pensions law solicitors in London. He is recognised for his representation of the trustees of large schemes in the utility, manufacturing and pharmaceutical industries – Chambers UK 2016
  • The “level-headed and calm” Mark Greenlees receives significant praise from commentators, with clients indicating “his length of experience makes him very knowledgeable and his advice is pragmatic.” – Chambers UK 2015
  • Mark is ‘admired for his “relaxed style and dry humour.”‘  Legal 500 2014 leading lawyer
  • ‘Mark is said to have a “great ability to be pragmatic and concise in his advice.”‘ Chambers UK 2014 ranked lawyer
  • Named as a leading individual, Legal 500 2013
  • Mark is “an excellent adviser when dealing with large and complex projects.”
    Legal 500 2012
  • “Mark has extensive experience of advising on complicated pensions matters. He has acted for the trustees of some of the largest pension schemes for both governmental and private organisations.” Chambers UK 2012
  • Recommended Legal 500 2011
  • ‘With more than 25 years of practice to his name, Mark Greenlees has experience of all aspect of pensions law. Interviewees say he “always does incredible work for his clients.”’  Chambers UK 2010

Extracurricular interests and activities:

Family, Watford FC and Caterham 7s