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National Patient Safety Agency - National Research Ethics Service - facilitating and promoting ethical research
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Different types of REC

All NRES RECs are established by the Health Research Authority for the purpose of reviewing applications within the Governance Arrangement for Research Ethics Committees (GAfREC).
In addition, some of these RECs are also recognised for the purpose of reviewing clinical trials of investigational medicinal products (CTIMPs).  Only RECs with this recognition may review CTIMP applications.
 

Recognised RECs

These are recognised by the United Kingdom Ethics Committee Authority (UKECA) for the review of clinical trials of investigational medicinal products (CTIMPs), in accordance with The Medicines for Human Use (Clinical Trials) Regulations 2004, for the class of research.  The recognition took effect on 1 May 2004. 
 
There are two types of recognised RECs:
Type 1 RECs.  These are recognised for review of phase 1 CTIMPs in healthy volunteers only. 

Type 3 RECs. These are recognised for review of CTIMPs (other than phase 1 trials in healthy volunteers) and all other research taking place in more than one domain anywhere in the United Kingdom. They are also authorised to review other research.