INNSA (the Invasive Non-Native Specialists Association)1 is a Trade Body focussed on improving standards in the Invasive Species Industry.

INNSA aims to:-

  • encourage the highest standards within the industry
  • provide members' customers and clients with peace of mind and quality standards assurance
  • improve the business climate in which the industry operates
  • promote and protect the interests of its members
  • represent the interests of its members and the sector as a whole at all levels of the legislative and regulatory process

INNSA Membership demonstrates that a company can meet the highest standards in the industry, and has undertaken to meet the INNSA Standards2 for all works that they undertake.

INNSA Contractor Members provide Insurance-Backed Guarantees for every domestic and commercial project. 

How Can I Join INNSA?

INNSA is open to membership applications.  Please note that membership is approved following an independent verification process.  Full details are available on request. Register your interest in joining INNSA online at or by email to

Find out more: 


Registration demonstrates commitment, expertise and professionalism in your field.

If you would like further information on the scheme, please contact:

INNSA Secretariat:

Thornby Associates Ltd

The Old Rectory

Church Lane



Tel: 01604 743578


For further information visit:

To book your site survey and for any questions you might have, please use our online contact form or call 0845 643 1168