There is no deadline for submitting projects for the CREST Awards, they can be submitted all year round.
If you are completing an award via a placement (most common for Gold and Silver, e.g. Nuffield Foundation) then the placement may give you a deadline. If you have queries about these deadlines then please contact the placement or work experience provider.
If you are taking part in a competition related to CREST then there may be a deadline for this. These deadlines will be separate to CREST and enquiries should be directed to the help for that competition.
N.B. If you are asked to resubmit there is also no deadline for this.