Answer: qeii

AnswerCrossword Clue
QEII

... Centre (London conference building named for a living royal)

QEII

Awarder of MBEs

QEII

Cunard retiree, briefly

QEII
Kate Middleton's nana-in-law, briefly
QEII
Royal Brit, in brief
QEIIPrince Philip's wife, for short
QEIIFormer Cunard flagship, for short
QEIILiner of note
QEIICunard flagship for 35 yrs.
QEIIRetired Cunard flagship, for short
QEIIRetired Cunard liner, briefly
QEIIFormer Cunard fleet member, for short
QEIIRoyally named liner, briefly
QEIICunard vessel named for a reigning monarch, familiarly
QEIIBritish monarch, initially
QEIILegendary ocean liner, familiarly
QEIIUK VIP
QEIIModern-day monarch, for short
QEIIOscar-winning role for Helen Mirren, in brief
QEIIRuler crowned in 1953, informally
QEIIBritish monarch beginning in '52
QEIIHelen Mirren's crowning role, informally?
QEIIMonarch moniker, for short
QEIILong-reigning English monarch, informally
QEIIRole for Helen Mirren, briefly
QEIIRoyal who's notably a crossword fan, for short
QEIILongest-reigning British monarch, informally
QEIIKate Middleton's mother-in-law, for short
QEIIFamed liner, briefly
QEIIFamed Cunard liner, for short
QEIIU.K. V.I.P.
QEIIMonarch who took the throne in '52