His Royal Highness The Duke of Edinburgh passed away peacefully at Windsor Castle in the morning of Friday 9th April. The official announcement can be found here on the Royal website. There is now a period of mourning of 8 days until his funeral next Saturday, 17 April.
If you would like to sign the online book of condolences, it is linked from the Royal website here.
As to floral tributes, the protocol and wishes for charitable donations can be found here.
Further information will be published if required to do so in due course.