HM The Queen, TRH The Duke of York, Princess Beatrice and Princess Eugenie, Sarah, Duchess of York, HRH The Princess Royal
Buckingham Palace
London
SW1A 1AA
United Kingdom
TRH The Prince of Wales and The Duchess of Cornwall, TRH The Duke and Duchess of Cambridge, TRH The Duke and Duchess of Sussex
Clarence House
London
SW1A 1BA
United Kingdom
TRH The Earl and Countess of Wessex
Bagshot Park
Bagshot
Surrey
GU19 5PL
United Kingdom
The Duke and Duchess of Gloucester
& Prince Micheal and Princess Micheal of Kent
Kensington Palace
London
W8 4PU
United Kingdom
The Duke and Duchess of Kent
St James Palace
London
SW1A 1BQ
United Kingdom
RoyalResponses 
Hello!
Could you tell me on which address the Habsburg family can be contacted? (Archduke Imre and His siblings – Archduchess Catharina – …)?
Thank you so much in advance!
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Yes
I write to the Grand Ducal Palace in Luxembourg and they forward the mail to them
Hope this helps
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Thank you!!
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Hello! I would like to start sending the Royals some well wishes but I am not sure how to start. What do you put in the letters? Do you add your address? Do you have any examples of what you write to them? Thank you for your help!
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You can write what ever you like.
If its for a birthday just a nice letter or card with their Title and Name, wish them a happy birthday and sign it.
Yes you should add your address so they can reply to you.
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