About us
Board of Directors
Branch Locations
Financial strength - credit ratings and solvency margin
QFE Disclosure Statement
About us
MAS may be new to you, but we’ve been looking after professional people’s financial needs for a long time. MAS can help you with everything from insurance and loans to savings, investments and business advice at every stage of your personal and professional lives.


A Society for professionals

MAS is a membership-based society for professional people. Because we have experience dealing with professionals, we understand the specific needs you have. Traditionally we’ve drawn on the health professions and their families for the majority of membership. Over time, it has been our privilege to extend services to a wider range of professionals. Today, more than 24,000 Members trust us with their business.


Financial strength

The financial strength of MAS is reflected in the ratings carried by our insurance and finance companies.

  • Our general insurance company Medical Insurance Society Limited (MIS) is rated A-/Stable by approved agency Standard & Poor's.
  • Our life insurance company Medical Life Assurance Society Limited (MLA) is rated A-/Stable by approved agency Standard & Poor's.
  • Our finance company Medical Securities Limited (MSL) is rated A-/Stable by approved agency Standard & Poor's.

Further information about our ratings, including the scale of which the rating forms part, is available for inspection at every office of MAS.

Our history

MAS was set up in 1921 by a group of doctors who felt that insurance companies weren’t meeting their needs. As a mutual, we can take a long-term and conservative approach to managing the risks we undertake on behalf of Members. Over the years as membership has expanded, we’ve offered more and more of the products Members need, tailored to busy professionals.



MAS is governed by a board of directors. Our Chief Executive Officer is Martin Stokes.


Careers at MAS

Find out about working for us and browse our current vacancies here.



 Medical Assurance Society 2012 Annual Report (5 MB)

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