2016 - Booklet of 4 x 2nd class Large with year code M16L and source code MFIL with security backing paper (type 1)
Printed by Walsall Security Printers
These booklets first appeared in July 2016 - pack date is 08/03/16
Cylinders W2(blue) W1(iridescent) W2(phosphor), hidden by the front cover.
Royal Mail have said that booklets and business sheets will be reissued in October 2016 with a new corporate ID, so the print run for these might be low, if replacement is due soon.
SG number RA3 - security backing paper