I've just come across this and thought it might be valid for a couple of you. Apologies if it's already been mentioned.
Taken from here
- Important Notice Regarding Your City & Guilds Certificate
It has recently come to our attention that some of our certificates issued for the 2391 qualification do not have regulators' logos appearing on the certificate.
Anyone who has received a certificate for 2391 between Jan 2008 and Dec 2010 is able to claim a replacement certificate. Please be assured this does not, however, affect the validity of the certificate you hold.
To claim a replacement certificate at no charge please go to link below.
Replacement certificates
Please quote 2391 replacement certificate.
Taken from here