Actually its an SRG1119E if revalidating by experience.......
Doesn't have to be, could equally be SRG1157.
SRG1157 = Can be used for Revalidation/Renewal of many Ratings, including
SEP revalidation by experience.
SRG1119E = Can only be used for SEP Revalidation by experience.
I have heard (rumour) that the CAA are planning to re-jig SRG1157
slightly and then only use that. The forest of other forms being
discontinued.