Generally, there is an expectation that a trial should start (recruitment activities) within a specified time period. For example, the ethics committee will assume that the research will commence within 12 months of the date of favourable ethical opinion and may review its opinion if the trial does not start with 24 months of receipt of the final opinion letter. 

Resources

TypeWhere to find
Key contacts JRCO; JRO
Useful links NHS (NoCLoR) - research recruitment
NIHR benchmark Within NIHR 70-day benchmark (Day 30-end)
Process map links This activity occurs in the recruitment stage:
Imperial College London as sponsor
Imperial College Hospital NHS Trust as sponsor
Commercial organisation as sponsor
Non-commercial organisation as sponsor