Unfortunately there is a number of RCEs that are indexed back to the wrong certificates. It may be that an RCE button shows when it shouldn't, or that the RCE button is missing when it should be displayed. If you find any certificates with an RCE mark and the RCE button is not there for you, then fill in a contact form and ScotlandsPeople or GROS will reply to you, usually with a copy of the RCE image.
ADP