On the 23rd, Grand Duke Henri sent a letter of condolence, following the attacks in London on the 22nd. The text of the letter is below:
The Grand Duchess and I are shocked to hear about the news of the terrible events yesterday near Westminster.
The Luxembourg people join us in expressing to Your Majesty our most heartfelt sympathy for the victims and their families.
In these times of uncertainty it is of utmost importance to stand together in the defence of our common values.
Grand Duke of Luxembourg