About the LSA

Click here to hear what LSA Chair, Jeff Twentyman of Slaughter and May has to say about the LSA


The Legal Sustainability Alliance (LSA) was founded in 2007 by a group of leading law firms to take positive action on climate change by measuring, reducing and reporting on their carbon footprint.

Since that time the LSA has grown both in size and scope. We are now a collaborative network of nearly 300 firms across the UK with members varying from small practices to multinational global firms. Membership is free thanks to the generous contribution of the LSA Executive Firms and The Law Society who provide both financial support and strategic leadership.

The shift of our name from the Legal Sector Alliance to Legal Sustainability Alliance reflects this new wider remit. LSA member firms are committed to looking at and acting on all areas of sustainability.

Our Mission

To facilitate collaboration and sharing between UK-based law firms in order to support them in taking action to improve the environmental sustainability of their operations and activities.

To achieve this we have set ourselves some overarching aims for the next two years. These are:

  1. To enhance LSA impact and influence across the legal sector
  2. To lead the debate on environmentally sustainable business practice from the law firm perspective
  3. To support, encourage and engage with the widest group of law firms by expanding LSA membership
  4. To embed good practice on environmental sustainability (including carbon reduction) through measurement and reporting

The day to day work of the LSA to deliver these aims falls into three main areas: Communication & Influence, Engagement & Support and Measurement, Reporting & Sustainability – each with a series of clearly defined and targeted objectives to ensure we are as active and effective as possible.

To find out more about the advice, case studies, support and activities of the LSA explore our new website or get in touch with the LSA team

Why join?

LSA Membership Principles

The Business Case

Frequently Asked Questions (FAQs)