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Official Recognition: Introduction

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It is a requirement of Regulation EC No 1107/2009 that the tests and analyses required to demonstrate the efficacy of plant protection products must be conducted by ‘Official’ or ‘Officially Recognised’ efficacy testing organisations. The data to be generated demonstrating efficacy in support of plant protection product authorisations are outlined in Section 6 Part A and Part B of Commission Regulation (EU) No 545/2011.

Efficacy tests and analyses include; field, glasshouse or laboratory trials and tests to determine the effectiveness and crop safety of plant protection products, plus its safety to other crops, plants and beneficial organisms. Official Recognition is also known as Good Experimental Practice (GEP).

The requirements that organisations conducting efficacy trials within the EC must satisfy in order to become 'Officially Recognised' are outlined in paragraph 2.2 of Part A and Part B of Commission Regulation (EU) No 545/2011.

The UK introduced their scheme in October 1997. Efficacy data from trials in the UK which commenced after 1 January 1998 will only be accepted by CRD from Officially Recognised organisations. In other EU Member States, Official Recognition/ GEP schemes came into operation at different dates. It is the responsibility of applicants to ensure that efficacy data to be submitted in support of product registrations have been generated by 'Officially Recognised' facilities/organisations.

Please Note: Companies undertaking efficacy trials work must also ensure that they comply with the statutory requirements for carrying out research and development work involving the release into the environment of an approved or unapproved active substance and/or pesticide that is not approved for the proposed use in the UK. Full details can be found in our guidance on Trials Permits.

To Apply for Official Recognition

The application form and associated guidance notes for UK certification of 'Official Recognition' are available as either pdf or MSWord files (see "Further Information"). The MSWord document can be filled in electronically and e-mailed with relevant supporting information to: [email protected]. An electronic submission is preferred.


CRD will contact the registered facility 5 months prior to the expiry date of the current certificate reminding them of the expiry date and inviting that organisation to submit a new application if certification is to be retained. No further reminder will be sent. Failure to submit a renewal application will result in termination of the OR status of the facility at the expiry date of the existing certificate, at which time the name of the facility will be removed from the published list of testing facilities. Upon receipt of a completed application an invoice will be sent as applications cannot be started or certificates issued unless payment has been received [see the current fees page]. To ensure unbroken certification, CRD must receive the application for renewal at least 8 weeks before the expiry of the current certificate. All parts of the application form must be completed. For a renewal it is particularly important to complete Section 5, where a list of all efficacy work which could be used in support of product authorisations undertaken in the last 2 years is required, and also Section 6 where an explanation is required of the steps taken to address any issues raised in the last inspection report.


See the contact page.

Further information


Updated 2020-07-17