22 March 2011 - specific date because of change of cover detail.
Security Definitive stamps with U-shaped cuts and iridescent text.
4x 2nd class Large booklet - first issue with year code MA11 and source code MFIL
Printed by Walsall Security Printers
printer's name imprint removed
and 5mm edge strip
SG catalogue number RA2b
Only non-cylinder books available.