Where an award carries entitlement to postnominal letters these are indicated in brackets after it.

Grand Mastership or equivalent positions within Orders of Chivalry and other Orders of a chivalric character

• Prince Grand Master and Hereditary Grand Cross with Collar of the San Luigi Orders (2011-)
  • The Order of the Crown of Thorns (L’Ordre Souverain, Chevaleresque, Nobilaire et Religieux de la Couronne d’Epines) (G.Coll.C.E.)
  • The Order of the Lion and the Black Cross (L’Ordre Souverain, Chevaleresque et Noble du Lion et de la Croix Noire) (G.Coll.L.C.N.)
  • The Grand Prix Humanitaire de France et des Colonies (Cross of Merit of the Order of the Crown of Thorns) (Compagnon Grand Croix)
• Prince Grand Master and Hereditary Grand Cross of Justice with Collar of the Royal Orders of the Royal House Polanie-Patrikios (2015-)
  • The Royal Order of the Imperial Crown of Byelorussia
  • The Order of the Golden Cross of Miensk
  • The Byzantine Order of Leo V the Armenian (previous appointment, 2012)
  • The Noble Order of Ivan the Infante
  • The Honorable Order of the Byzantine Cross
  • The Order of the Sacred Cup (Grand Knight Chancellor) (previous appointment, 2012) (K.S.C.)
  • The Order of Merit of Leszek II (previous appointment, 2015)
  • The Royal Byelorussian Protectorate of the Orthodox Order of the Knights Hospitaller of St John of Jerusalem (previous appointments, 2002, 2012) (G.C.St.J.H.(J))
  • The Royal Byelorussian Protectorate of the Military and Hospitaller Order of St. Lazarus of Jerusalem (previous appointment, 2012) (G.C.L.J.(J.))
  • The Order of the Pedigree
  • The Order of St Laurent
• Grand Master of the Religious Merit Orders of the Catholicate of the West (2015)
  • The Order of St James the Apostle (Apostolic Episcopal Church)
  • The Order of St Martin of the Holy Cross (Apostolic Episcopal Church)
  • The Sacred Antiochene Order of Saints Peter and Paul (Apostolate of the Holy Wisdom)
  • The Order of the Keltic Cross (Apostolate of the Holy Wisdom)
  • The Valiant Order of St John the Baptist (Ancient Catholic Church)

Appointments to other Orders of Chivalry and Orders of a chivalric character

1. From reigning monarchies

• Grand Commander and Grand Prior for UK of the Order of the Calamian Star of Peace (Coron Island Ancestral Domain, The Philippines) (2018)
• Hereditary Grand Collar of the Royal Order of Kwakyen Ababio (Kingdom of Abura Papagya, Ghana) (2023)
• Knight Grand Cross of The Most Honourable Order of Omukama Chwa II Kabalega (Bunyoro-Kitara Kingdom, Uganda) (G.C.C.K.) (2020)
• Knight Grand Cross of the Royal Order of the Elephant of Besoro and Honorary Member of the Friends of the Kingdom of Besoro (Kingdom of Besoro, Ghana) (2023)

2. From Heads of Imperial and Royal Dynasties, Heads of Churches, International Orders etc.

• Hereditary Grand Collar of Justice of the Sovrano Costantiniano Ordine di San Giorgio, già detto Ordine Costantiniano-Amoriano dei Cavalieri Aurati d’Oriente (Dinastico d’ Amorio) (2016)
• Hereditary Grand Collar of Justice of the Ordine Militare et Ospitaliere di San Giovanni d’Acri e San Tommaso (Imperial Byzantine Amorian Dynasty) (2016)
• Hereditary Grand Collar of Justice of the Ordine Militare e Ospedaliero di Santa Maria di Betlemme (Imperial Byzantine Amorian Dynasty) (2016)
• Hereditary Grand Collar of Justice of the (Ordine del) Cingolo – alias Cingolo Militare (Dinastico d’Amorio) (2016)
• Hereditary Grand Collar of Justice of the Ordre Équestre de Saint George de Bourgogne (Imperial Byzantine Amorian Dynasty, through the succession from the late Prince Pierre Pasleau de Charnay et Surmont) (2016)
• Hereditary Grand Cross of Justice with Collar of the Order of the Knights of St Catherine of Sinai (Imperial Byzantine Amorian Dynasty) (2016)
• Hereditary Grand Cross of Justice with Grand Collar of the Constantinian Order of Epirus (Royal House of Epirus) (2025)
• Knight Grand Cross of Justice with Collar of all the present and future Orders of the Justinian-Heraclian Dynasty of Tomasi (subsequently Tomassini)-Paternò Leopardi of Constantinople, (2016) currently (2023):
  • Knight Grand Cross of Justice with Collar of the Ordine Imperiale della Corona Eracliana di Costantinopoli
  • Knight Grand Cross of Justice with Collar of the Ordine della Guardia d’Onore di Santa Sofia
  • Knight Grand Cross of Justice with Collar of the Ordine Imperiale Costantiniano di San Giorgio
• Prior and High Protector, Knight Grand Cross of Justice with Collar of the Order of the Eagle of Albania (Princely House of Scuro) (2018)
• Grand Commander of the Order of the Star of Solidarity of the Royal House of Maharaja Adinda Aranan (Royal House of Maharaja Adinda Aranan (Sulu, The Philippines)) (2020)
• Hereditary Grand Cross of the Order of Duke Ketel (House of Cseszneky, Hungary) (2023)
• Hereditary Grand Cross of the Ordine Internazionale delle Legion d’Onore dell’Immacolata (Imperial Byzantine Amorian Dynasty (Amoroso d’Aragona)) (2016)
• Hereditary Grand Cross of Justice of the Sacro Sovrano Imperiale Militare Ordine Costantiniano di San Giorgio della Milizia Aurata d’Oriente della Imperiale e Real Casa Lascaris Ventimiglia Valperga Sanmartino (2016)
• Knight Grand Cross of Honour (thereby of Justice) in the Sacro Imperiale Ordine Costantiniano Nemagnico di Santo Stefano of the Imperial e Real Casa Capone Nemagna Paleologo (2016)
• Knight Grand Cross of the Order of the Crown of Cariati (dynastic Order of the Prince of Cariati) (2024)
• Knight Grand Cross of the Ordo Supremus Militaris Templi Hierosolymitani (K.G.C.T.J.) (2020)
• Knight Grand Cross of the Knightly Order of St George the Martyr (G.C.St.G.) (2017)
• Chevalier Grand Cross of the Order of St Cornelius the Centurion (Anglican Independent Communion) (G.C.S.C.) (2003)
• General Lieutenant for the U.K. – Knight Grand Cross in the Corps of Volunteers of Assistance and of Peace “The Knights of Holy Mary of Angels” (Royal House of Susiana) (2003)
• Grand Cross Chaplain of the Ordo Equestris Reginae Caeli (2021)
• Grand Cross of the Militia Sancti Pauli (House of Burcklé von Aarburg) (2017)
• Perpetuum of the Ordine Venerabile della Venerabile Confraternita di Maria Ss.ma del Buonconsiglio della Buona Morte e Misericordia, Italy (2017)
• Datu Paduka in the Grand Order of Sultan Bantilan Muizuddin (Royal House of Maharaja Adinda Aranan (Sulu, The Philippines)) (2016)
• Commander (Laksamana) in the Supreme Order of Aranan (Royal House of Maharaja Adinda Aranan (Sulu, The Philippines)) (2020)
• Hereditary Knight of Justice of the Serenissimo Militare (e Nobiliare) Ordine di San Marco (Imperial Byzantine Amorian Dynasty) (2016)
• Knight of the Order of Genet (Fief Blondel, Guernsey) (O.G.) (2024)
• Knight of the Order of the Star (Fief Blondel, Guernsey) (K.O.S.) (2024)
• Knight of the Order of the Thistle of Bourbon (Fief Blondel, Guernsey) (K.T.B.) (2024)
• Cavaleiro de Acre from the Ordo Templum Domini (2023)
• Knight of the Order of the Precious Blood (2014)
• Honorary Protective Shield in the African Royalty Humanitarian Order (2024)

3. Crosses and Medals of Merit etc.

• Gold Cross of Merit of the Royal Order of St Stanislas (G.C.M.St.S.) (2014)
• Officer’s Cross of the Prussian Order of the Eagle (2021)
• Commemorative Cross of the 150th anniversary of the birth of Marshal Józef Piłsudski (2017)
• Second Class Medal and title of Datu Panglima in the Supreme Order of Aranan (Royal House of Maharaja Adinda Aranan (Sulu, The Philippines)) (2017)
• Medal of Honour in Silver with Swords (Knight 2nd Class)  (Association for the Memory of the House of Hohenzollern and the Kingdom of Prussia) (2024)
• H.R.H. Princess Dayang-Dayang nur Mahal T. Kiram Medal of Solidarity (Royal House of Maharaja Adinda Aranan (Sulu, The Philippines)) (2018)
• Gold medal in memory of Bishop Juliusz Nowina-Sokolnicki (The Apostolic Episcopal Church) (2016)
• Honorary Brotherhood in the Ordine Militare e Religioso dei Cavaliere di Cristo (2014)
• Honorary membership of the Ordo Templum Domini (2018)
• Medal “Pro Deo et Ecclesia” and the “Abbot Klaus D. Schlapps OPR” Memorial Medal awarded by Bishop Christian Kliver of the Apostolic Pastoral Congress (2015)
• Brigadier in the Byzantine Rangers (Royal House Polanie-Patrikios) (2013)
• Commemorative medals of the Royal House of Thailand (2012)
  • Commemorative Medal for the 7th Cycle Birthday Anniversary of King Bhumibol Adulyadej (Rama IX), first issued 2007
  • Commemorative Medal on the Occasion of the 6th Cycle Birthday Anniversary of H.M. Queen Sirikit, first issued 2004.
  • Commemorative Medal for the Investiture of H.R.H. Prince Vajiralongkorn as Crown Prince, first issued 1972.

4. Fraternal associations

• Tennessee Squire (2014)

See also Foreign nobiliary and chivalric honours held, and foreign sovereignty exercised, by British nationals