Several major supermarkets and retailers have announced they will temporarily close during the Queen's funeral on Monday 19 September.
The day will be a public bank holiday, King Charles III has announced.
While employers do not have to give staff a day off, many may choose to do so, and schools are expected to close.
In a statement, the government said the holiday "will be a unique national moment, and we would encourage employers to respond sensitively to requests from workers who wish to take time off."
"The government cannot interfere in existing contractual arrangements between employers and workers. However, we would expect that many workers will be able to take the day off on the bank holiday," it added.
A royal source told ITV News Royal Editor Chris Ship: “It is up to individual organisations to decide … balancing it with the need to cause minimum disruption to others. There have been no blanket instructions from the Royal Household for cancellations”.
Major retailers could also shut early, or stay closed on the day, with millions of people expected to watch the funeral procession and service in person, online or on television.
What supermarkets will close during the Queen's funeral?
All large Tesco stores will close for the full day on Monday "in order for colleagues to pay their respects."
The vast majority of Tesco Express stores will open at 5.00pm and close at 10.00pm. A small number around central London will be open all day.
Online orders will be cancelled on Monday. Those who have booked a delivery to their home will be asked to re-book a slot for another day.
The vast majority of Waitrose branches will close.
A 'small' number may remain open on the funeral route to serve the thousands of people expected to line the route, the spokesperson said.
Sainsbury's have confirmed that all stores will close, with some very limited exceptions.
In a statement, they said that "our convenience stores and petrol filling stations will be open from 5pm-10pm to allow our customers to pick up essential items, while select stores in central London will open to serve those attending the funeral in person."
Aldi has said it'll close all its stores during the bank holiday out of respect to the late monarch.
Asda said it will shut all its stores from midnight on Sunday, 18 September until 5pm on the Monday to allow employees to watch the funeral.
Along with other major supermarkets, they will not fulfil any deliveries on Monday.
An Asda spokesperson said it was to "allow our customers and colleagues to recognise the passing of our late monarch and commemorate her steadfast service to our nation."
Morrisons told ITV News that it will close all supermarkets on Monday, 19 September "as a mark of respect and so colleagues can pay tribute to Her Majesty".
They do plan to reopen their petrol stations at 5.00pm.
Marks and Spencer
M&S has confirmed that stores will close on Monday with limited exceptions in London and Windsor, which will also close during the funeral.
They will also halt deliveries to customers but franchise stores in public service sites, such as hospitals, are expected to remain open.
Stores will be closed on Monday. Shirine Khoury-Haq, Co-op chief executive, said: "We are deeply saddened by the death of Her Majesty the Queen. As a mark of respect and to give our colleagues, customers and members time to reflect and mourn, we will be closing our stores on Monday, September 19."
Pubs did not have to close when the Queen's death was announced, but some chose to do so - and it is thought the same will apply on Monday, ITV News Consumer Editor Chris Choi reports.
Although Monday, September 19 will be a bank holiday, the choice to close businesses will be at the discretion of individual firms according to the official guidance that has been issued.
What shops and restaurants will close during the Queen's funeral bank holiday?
Poundland said all its 770 UK stores will close for the whole day, and staff scheduled to work on September 19th will still receive their pay in full.
“We know how important it will be that colleagues have the opportunity to pay their respects next Monday, as the country comes together to honour and celebrate the life of the Queen,” Poundland said.
B&Q stores will also be closed across the country, while home delivery services will also be suspended.
Marks & Spencer
The company say" "On Monday 19 September, we will cease customer delivery services and close M&S-owned stores in the UK for the entire day, with some limited exceptions."
Dreams said all areas of its business, including stores and deliveries, would be suspended on the day of the Queen's funeral.
Chief executive Jonathan Hirst commented that, “our heartfelt sympathy and thoughts are with the royal family at this sad time."
The furniture store will be closed all day.
The up-market Knightsbridge store Harrods will also close as a way of paying respect.
Clothes retailer Primark has announced it will close all of its flagship stores on the day of the Queen's funeral. The stores will open at a normal time on Tuesday, September 20.
John Lewis has said its stores will be closed on Monday, September 19.
John Lewis Partnership chief operating officer Andrew Murphy said: “We are deeply saddened by the death of Her Majesty The Queen.
"We are closing our stores on the day of her funeral as a mark of respect, and because we believe this is the right thing to do for our Partners and customers.”
All Argos stores will also be closed on Monday, September 19.
Will be shut on Monday.
The Swedish furniture store will close as a mark of respect.
"Toolstation has decided that all parts of the Group & businesses in the UK will close all day on Monday 19 September to coincide with Her Majesty Queen Elizabeth II’s State Funeral," the company said in a statement.
The fast food chain will not open their 1,300 outlets until 5pm on the day of the funeral.
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