for your amusement, I present: all 345 titles currently offered by Nationwide

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Mr
Mrs
Miss
Ms
Dr
Able Seaman
Admiral of the Fleet
Admiral Sir
AFC
Air Chief Marshal
Air Commodore
Air Marshal
Air Marshal Sir
Air Vice Marshal
Air Vice Marshall
Alderman
Ambassador
Archbishop
Archdeacon
Asst Chief Officer.
Asst Divis Off.
Attorney General
Baron
Baroness
Baronet
Bishop
Birgadier
Brigadier Lord
Brigadier Lt Col
Brigadier Sir
Brother
Cadet
Canon
Capt The Rt Hon
Captain
Captain RN
Captain Sir
Cardinal
Cavaliere
Chaplain
Chief
Chief Constable
Chief Inspector
Chief Officer
Chief Petty Officer
Shief Supt
Chief Tech
Col The Reverend
Colonel
Colonel The Hon
Colonel The Lord
Colonel The Rt Hon
Colour Sergeant
Comm of Police
Commandant
Commander
Commander Sir
Commissioner
Commodore
Company Sergeant
Comte
Constable
Conte
Contess
Contessa
Contessa De
Corporal
Councillor
Councillor Miss
Councillor Mr
Councillor Mrs
Councillor Ms
Count
Countess
Countess of
Cpl Tech
Dame
Darbari
Deacon
Dean
Dep Chief Const.
Deputy Chief Off.
Deputy Lieutenant
Detective Constable
Divis Officer
Divisional Commander
Dom
Dow Marchioness
Dowager Duchess
Dowager Lady
Earl
Eur Ing
Father
Field Marsh Lord
Field Marshal
Fireman
Firewoman
Flight Lieut
Flight Sergeant
Flying Officer
Frau
General
General Sir
Group Captain
Gunner
Hafiz
Her Grace The
Her Honour Judge
Her Royal Highness
Herr
High Sheriff of
High Steward Uni
His Em Cardinal
His Excell Sir
His Excellency
His Grace The
His Hon. Judge
His Honour Judge
His Royal Highness
HM Consul Gen
HM Lord Lieut
Hon Viscount
Honourable Dame
Honourable Earl
Honourable Lord
Honourable Mrs
Honourable Sir
HRH Prince
HRH Princess
HRH The Duke
Inspector
Jnr Ldr
JSPR
JTPR
Judge
L/S
LAC
Lady
Lady Mayoress of
Laird
Lance Bombardier
Lance Corporal
Le Comte
Leadg Firewoman
Leading Fireman
Leading Steward
Librarian
Lieut Col The Lord
Lieut Colonel
Lieut Colonel Sir
Lieut Commander
Lieut Commander Retd
Lieut General
Lieut General Sir
Lieutenant
Lieutenant Col Rtd
Lord
Lord Lieutenant
Lt Col Hon
Lt Commander Sir
Madame
Mademoiselle
Major
Major (Retired)
Major Gen Lord
Major General
Major General Lord
Major General Sir
Major Sir
Major The Earl
Major The Lord
Managing Director
Marchioness
Marquess
Marquess of
Marquis
Marquise
Marshal of RAF
Master
Matron
Messrs
Midshipman
Mistress
Monsieur
Monsieur Le Comte
Monsignor
Most Hon Marquess
Mother Superior
Mother
Officer
Ops Sgt
Pastor
Petty Officer
Pilot Officer
Police Constable
Prebendary
Prince
Princess
Private
Professor
Professor Dr
Professor Sir
Rabbi
Rear Admir Earl
Rear Admiral
Rear Admiral Sir
Regim Sgt Major
Rev Canon Dr
Rev Dr
Rev Miss
Rev Mr
Rev Mrs
Rev Ms
Revd Mo Prioress
Revd Prebendary
Revd Professor
Revd Rabbi Dr
Reverend
Reverend Dr
Reverend Lord
Reverend Mother
Right Honourable
Right Reverend
Rt Hon Baroness
Rt Hon Camberln
Rt Hon Chancellr
Rt Hon Countess
Rt Hon Dow Count
Rt Hon Dow Lady
Rt Hon Dow Visc
Rt Hon Earl
Rt Hon Justice
Rt Hon Lord Mayr
Rt Hon Viscount
Rt Hon Viscount [yes really]
Rt Hon Viscountess
Rt Rev Abbot
Rt Rev Bishop of
Rt Rev Dr
S/Lieutenant
SAC
Sayed
Sayedeh
Second Lieutenant
Senator
Sergeant
Sergeant Major
Sheikh
Sheriff
Signor
Sir
Sister
Sqdron Commander
Squadron Leader
Squire
Sr
Ssgt
Staff Sergeant
Staff Sgt Major
Station Officer
Sub Lieutenant
Sub Officer
Superintendent
Surgeon Captain
Surgeon Commandr
Surgeon Lieutenant
Surgeon Rear Adm
The Chairman of
The Chancellor
The Countess of
The Dowager
The Dowager Lady
The Duchess of
The Duke of
The Earl of
The Hon Colonel
The Hon Dr
The Hon Justice
The Hon Lady
The Hon Miss
The Hon Mr
The Hon Mrs
The Hon Ms
The Honourable
The Honourable Judge
The Honourable Sir
The Lady Abbess
The Lady of
The Lord of
The Lord Provost of
The Marquette
The Master of
The Metropolitan
The Mistress of
The Most Hon Marquis
The Most Revd
The Mother Abbess
The Patriarch
The Principal
The Raja of
The Revd Canon
The Revd Father
The Revd Lord
The Revd Prior
The Revd Prioress
The Revd Rabbi
The Revd Superior
The Revd The Hon
The Reverend Doctor
The Reverend Dom
The Reverend Sir
The Right Revd
The Rt Hon
The Rt Hon Baron
The Rt Hon Earl
The Rt Hon Judge
The Rt Hon Lady
The Rt Hon Lord
The Rt Hon Miss
The Rt Hon Mr
The Rt Hon Mrs
The Rt Hon Ms
The Rt Hon Sir
The Rt Hon The Lord
The Sister Superior
The Venerable
Trooper
Trustee
V Revd Ch Rabbi
V Revd Dean of
V Revd Provost
Ven. Archdeacon
Venerable
Very Rev Dr
Very Revd Canon
Very Reverend
Vice Admiral
Vice Admiral Sir
Viscount
Viscountess
Warrant Officer
Warrant Officer First Class
Wing Commander
WO
WPC