The Government has published new guidance for national mourning as the country marks the passing of the Queen.
A 10-day mourning period began at midnight on Friday, with public-facing Government activity all but suspended and Parliament expected to rise once tributes have been paid.
The state of mourning is due to culminate with the State Funeral, although a date has not been confirmed by Buckingham Palace.
A new five-page Cabinet Office document sets out advice for businesses, events organisers and Brits wishing to pay their condolences after the death of our longest serving monarch.
It states: "Mourning is very personal and we anticipate individuals, families, communities and organisations may want to mark Her Majesty’s demise in their own way.
"There is no expectation on the public or organisations to observe specific behaviours during the mourning period."
Here's what you need to know.
Businesses and public services
The Government says there is "no obligation" for businesses to shut their doors during the national mourning period.
The guidance says some businesses "may wish to consider closing or postponing events, especially on the day of the State Funeral" depending on the "nature and location of their business and the tone of planned event".
But this is at the discretion of individual businesses.
Organisations may wish to use black banners on their websites or post about the Queen on their social media channels, the guidance says.
Public services will continue to operate as usual, although there maybe some changes to service availability.
Further guidance on any potential considerations relating to the day of the State Funeral will be issued if needed.
Sports fixtures and major events
The guidance says there is no obligation to cancel or postpone sports fixtures or major events during the mourning period.
However, it suggest organisers should consider scrapping their plans on the day of the State Funeral.
The Government said: "As a mark of respect, organisations might wish to consider cancelling or postponing events or closing venues on the day of the State Funeral.
"They are under no obligation to do so and this is entirely at the discretion of individual organisations.
"If sporting fixtures or events are planned for the day of the State Funeral, organisations may want to adjust the event timings so they do not clash with the timings of the funeral service and associated processions."
Organisers may wish to hold a minutes silence and play the national anthem at the start of events players may wish to wear black armbands.
Museums and galleries
Public museums, galleries or similar venues are not obliged to close during the National Mourning period.
Organisations may choose to close on the day of the State Funeral, however there is no obligation to do so and this is at the discretion of individual organisations.
The guidance suggests institutions may wish to display images of previous Royal visits, particularly if they are associated with the Queen.
Floral tributes
Mourners can leave flowers in several places; at a “memorial flower garden” created in Green Park, next to Buckingham Palace; at Windsor, tributes can be laid on the Long Walk at Cambridge Gate close to the town centre.
In Edinburgh the location is the Palace of Holyroodhouse and in Cardiff, “flowers can be laid at the areas either side of the City Hall entrance”.
The Government publication also tells people how to create places where Books of Condolence can be signed.
“The layout of the table is usually a trestle table on which the book is placed with a white tablecloth, an arrangement of flowers (usually lilies or other white flowers) and a framed formal photograph of Her Majesty,” it says.
“This could be an official portrait photograph, or one taken at a previous royal visit. As a mark of respect, a black ribbon could be wrapped around the top right hand corner.”
Donations
Grief-stricken Britons may wish to donate to charity in memory of the Queen, according to official mourning guidance.
“Making a donation to one of Her Majesty’s many charities and patronages may be considered a fitting way of paying tribute to Her extraordinary legacy,” it states.
Portraits of the Queen
Pubs, shops, galleries and other organisations don't need to remove pictures of the Queen from their walls.
The Cabinet Office says: "It is the custom to leave these in place, at the discretion of the organisation.
"For example, you will still see in many older public buildings official portraits on display of King George VIand other previous monarchs."
