The arrests of anti-monarchy protesters after the death of Queen Elizabeth II are "deeply concerning", say free-speech campaigners.

Police in Scotland have arrested two people in recent days, while a man was arrested and de-arrested in Oxford.

The arrests came at events to mark the Queen's death and proclaim King Charles III Britain's new monarch.

Ruth Smeeth, chief executive of Index on Censorship, says: "We must guard against this event being used, by accident or design, to erode in any way the freedom of expression that citizens of this country enjoy."

The Met Police says people "have a right to protest". A statement, external from Deputy Assistant Commissioner Stuart Cundy reads: "We have been making this clear to all officers involved in the extraordinary policing operation currently in place."

Read more here.

Queues are already starting to form in London ahead of the Queen's arrival to Westminster Hall in the Houses of Parliament, where she will be lying-in-state for four days.

This will begin at 17:00 BST on Wednesday and will last until 06:30 on Monday 19 September - the day of the Queen's funeral.

The queue begins at Lambeth Bridge, where mourners are preparing for a long wait.

Grace and Vanessa have been waiting in line overnight to pay their respects.

Grace says she has "always followed royal events" after her father who, as part of the Irish Guards, was involved in the Queen's coronation.

"This morning, we went to the actual rehearsal of Her Majesty's coffin going into Westminster Hall. It was heartbreaking, the solemness of the occasion," she tells BBC Breakfast.

"I think the whole nation is going to be heartbroken and in floods of tears - we were."

Vanessa says it is a "unique, once-in-a-lifetime" occasion.

"This is the way we want to pay respect to the Queen who has done a great service to the country and the Commonwealth and the world," she adds.

Image source, PA Media

Resting on top of the Queen's coffin at St Giles’ Cathedral in Edinburgh is the Crown of Scotland.

It dates back to the reign of James V, who was King of Scotland from 1513 until his death in 1542.

They are the oldest crown jewels in the United Kingdom.

It's made from Scottish gold - with gemstones, precious stones and Scottish freshwater pearls.

We’ve been hearing from people waiting in the queue at St Giles’ Cathedral in Edinburgh to visit the Queen’s coffin this morning.

Brian drove from West London to pay his respects.

He says she was "such an important historic figure" and the only monarch he has ever known.

Lindsay, who woke at 4am to travel from North Berwick, tells BBC's Breakfast: “She gave up her family life and her private life for this nation and I feel I just want to pay my respects to her."

Another visitor, Emily, who has just moved to Edinburgh from the US, says: “As an American, it’s different for me. But I feel like she’s been a part of my life my entire life, even though I’m not from the UK.

"I wanted to come pay my respects."

Image source, PA Media

Rory Wilson, a member of the choir at St Giles’ Cathedral, performed during a service of thanksgiving for the Queen in Edinburgh on Monday.

He's been telling BBC Breakfast that the service was “incredibly special” and he has “never experienced anything like it" in his ten years with the choir.

“The main thing I remember is the silence, rather than anything else. For about half an hour before the coffin arrived - complete silence”, he says.

“To have that, to try and keep it together and focus on that while all of this happening around you is difficult. But I feel very privileged to have been part of it.

“It’s a very high pressure situation because you want to make sure you’re doing a good job, the whole world is watching. But equally, you want to do the family justice for their service”, he adds.

It's another busy day:

In the morning: King Charles and Camilla, the Queen Consort, will visit Belfast where the monarch will meet Secretary of State for Northern Ireland Chris Heaton-Harris, as well as other party leaders.

After a meeting with religious leaders, the royal couple will attend a prayer service at St Anne's Cathedral before returning to London.

Image source, Reuters

17:00: The Queen's coffin is due to be moved from St Giles' Cathedral in Edinburgh to the city's airport, and then be taken by plane to RAF Northolt at 18:00.

The Princess Royal, Princess Anne, will accompany the coffin, as she has since the beginning of its journey in Balmoral.

19:00: The coffin is expected to arrive in London and will then travel to Buckingham Palace, where it will be met by the King and Camilla.

You can read about the day's proceedings in lots more detail here.

Shaimaa Khalil
BBC News, Sydney

Image source, Getty Images

"I grew up singing God Save the Queen and today was the first time singing God Save The King. I'm so proud of Charles but my heart breaks for the Queen," said Litiana Rakarakatia Turner, on the verge of tears.

She joined large crowds of Australians in Sydney for the local proclamation of King Charles III, which followed a national ceremony in Canberra.

There, they cheered "God save the King", marking the beginning of a new chapter for Australia and its relationship with the monarchy.

The King is now Australia's ruling monarch and head of state. But his mother's absence is still deeply felt here.

"[I am] happy and sad," another woman, Frances Kinraid, told the BBC. "The Queen's gone but we have a new King. I just hope it goes well for Charlie... King Charles!" she corrected herself, smiling.

But the passing of Queen Elizabeth II has also set in motion a series of official events in Australia - pushing the republican debate back to the fore.

Read the full piece here.

Katy Scott
BBC Scotland news

Corey Burgher, 44, joined the very back of the queue in Edinburgh's the Meadows park with stepdaughter Giovanna Giambastiani, 24, at 02:30 BST.

They both went to bed early just hours before in hopes of missing the crowds.

Burgher said: “We thought we’d be smart and thought it’d be quiet this time at night.

“We wanted to say our goodbyes to the boss. I’m in the military, I work on the submarines.

“I was surprised how much the news hit me. I didn’t know her personally, but I met her when I was a kid. I got quite emotional about it, it was quite a shock.”

Meanwhile, Luke McIlwain, 34, joined the queue with his partner Felicity Baines, 31, just after 03:00 BST.

“It’s a once in a lifetime opportunity. We might never see another Queen," McIlwain said.

“It’s getting quite cold but we wanted to join the line overnight to avoid the crowds - unsuccessfully."

McIlwain, who works as a surgeon, added that he found out about the Queen’s death after a nurse burst into his operating theatre mid-surgery to announce the news.

Katy Austin
Transport correspondent

Unprecedented demand for travel is expected in London this week, particularly from Wednesday when the public will have their first opportunity to view the Queen's coffin.

Transport providers say planning journeys will be essential as some areas will be exceptionally busy.

People are being told to avoid Green Park Tube station near Buckingham Palace if possible, and use others like Victoria, Piccadilly Circus and St James's Park.

Some bus services will be diverted because of road closures and people are also being told to think about walking the last stretch of their journeys.

Image source, Reuters

Katy Scott
BBC Scotland news

Ian Burns, 65, and his wife Lina Burns, 54, joined the queue at around 22:00 BST hoping that they might miss the crowds.

Lina, from Ukraine, starts work at 09:00 on Tuesday, but she says after work in Glasgow she "was determined to pay tribute to the Queen".

“The Queen means quite a lot in our lives," she says, adding: "We are here to cherish the memories."

“She is the best role model in modern society," she continues. "We learn so much about the Queen."

“Ian cried when he heard the news,” adds Lina, pointing to her husband from Bishopton.

“I was devastated," says Ian.

“We’re here for the duration of it tonight then we’ll go back home after," he continues.

“We came a bit later thinking it would be a bit quieter but obviously it’s not."

But nonetheless:“It’s been ok, we’re enjoying it.

"There’s people from all over here, it’s been good.”

Many thousands of mourners have been waiting through the night to pay their last respects to the Queen in Edinburgh.

People of all ages and from all different walks of life amassed in the heart of the Scottish capital.

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See more here:

Mourners queue all night to see Queen's coffin

Rebecca Seales
BBC News

Image source, Getty Images/Anita Kot

Why corgis? It's a story that may resonate with many parents.

In 1933, when the future queen was seven years old, some friends had a pet corgi - and so she wanted one, too.

Pembroke corgis were a familiar sight in Wales, but fairly new to England. The Duke of York, Elizabeth's father, approached a respected breeder named Thelma Gray, who brought the family three puppies from her kennels in Surrey to choose from.

They settled on a pup nicknamed Dookie - he was horribly behaved, biting courtiers and visitors with abandon.

Image source, Bettmann/Getty Images

Another puppy, Lady Jane, arrived from the same breeder a few years later.

Then, on her 18th birthday, Princess Elizabeth got Susan. The pair were inseparable, with Susan even gate-crashing her owner's honeymoon by stowing away in the royal carriage under a rug.

Over the next six decades, the Queen would own more than 30 of Susan's descendants - and accidentally invent the dorgi with the help of Princess Margaret's amorous dachshund, Pipkin.

Read more here.

Katy Scott
BBC Scotland

Heather Rippon, 56, and her son Sandy, 20, joined the Queen’s vigil queue in Edinburgh on this mild Monday evening.

After five-and-a-half hours in line, they were approaching the cathedral with sandwiches and cold drinks in hand for the final stretch.

Heather, who is from Northern Ireland but lives in Peebles in the Scottish Borders, said of the wait: "It's not been too bad.

"We've spoken to a few interesting people in the queue, including a lady whose mum used to do Highland dancing at Braemar."

"We're here because it's the right thing to do.

"She's been our Queen all our lives and we've never known anyone different."

The Queen's funeral is likely to be one of the largest and most significant international events the UK has hosted for decades. Leaders from around the world are invited to Westminster Abbey for the ceremony on Monday 19 September.

Media reports, however, suggest the UK Foreign Office has issued documents for those attending asking them to arrive by commercial jets, not private ones, and even requiring leaders to catch buses en masse from a site in west London, instead of using their own cars.

According to news website Politico, external, countries have been asked to keep their delegations to the funeral as small as possible, with only the head of state and their spouse invited to the funeral itself.

And private jet and car rules are reportedly in place to prevent London's airports and streets becoming swamped by the sheer numbers of those arriving.

US President Joe Biden has confirmed he will attend the event in person. The Guardian newspaper reports, external that a spokesperson for UK Prime Minister Liz Truss said on Monday that "arrangements for different leaders will vary", and that the documents were only for guidance.

Kirsty Wark
Outside St Giles' Cathedral in Edinburgh

Image source, Reuters

The queues go right round Parliament Square in front of the Signet Library, by St Giles' Cathedral.

People aren’t taking very long to go through. They’ve waited for hours and hours, but they’re moving quite swiftly.

Inside the cathedral, the coffin of Queen Elizabeth II lies on the catafalque, with the crown of Scotland at the head towards the front of the coffin.

People are very respectful. Some have been shedding tears. Some people stopping, showing their children, as if they want them to know about this history. One man can be seen carrying a baby in his arms past the Queen’s coffin.

I was struck by older people going past, who have waited for such a long time. And it meant so much to them because she has been monarch for most of their lives.

Timothy Miller, a security specialist and former US Secret Service agent, told the BBC that the Metropolitan Police have a "monumental task ahead of them" for the Queen's funeral.

When asked about whether US President Joe Biden would be travelling without Air Force One or his motorcade, he said it was not a "realistic possibility".

"The president of the US must be able to react within minutes to potential threats against the nation. As the leader that he is, he must have access to Air Force One for a number of security reasons, but also motorcade travel is important. The Secret Service is very sensitive on the requirements that they have," he told the World Tonight programme.

Miller said there would be unique security challenges.

"There will be a lot of heads of state in a single location and that's a dangerous security situation." he said.

Speeches at Westminster and Holyrood, a procession through the streets of Edinburgh, and queues to see the Queen at St Giles' Cathedral - it's been another hectic day.

You can watch a full round-up of all Monday's events here:

Katy Austin
Transport correspondent

The group that represents train companies has confirmed trains will run through the night on some routes to help people travel to pay their respects to the late Queen, but that this offer will be "very limited".

A Rail Delivery Group spokesperson said: "The rail industry is doing all it can to ensure people can travel to pay their respects during the period of mourning.

"Where possible we will be running some extra services and customers should check journey planners for the most up to date information."

On night trains specifically: "A very limited service will be operating through the night on some routes, people should check journey planners for details."

It’s not currently clear exactly when this period will start or end.

Police Scotland have announced that a 22-year-old man was arrested on Monday in connection with a breach of the peace on the Royal Mile in Edinburgh.

Footage posted on social media show a man yelling at the funeral procession through Scotland's capital, which included all four of the Queen's children.

After heckling the procession he was pulled back and removed from the crowd by police.

It's not the only incident involving demonstrators. A woman bearing a sign reading "Not my King" was moved away from the Palace of Westminster by officers on Monday, while a 22-year-old woman was arrested outside Edinburgh's St Giles' Cathedral on Sunday.

She has been released from custody but is due in court at a later date.

Image source, Getty Images

The former Prime Minister Boris Johnson has told the BBC the Queen was "absolutely on it" in their last meeting before his resignation as prime minister last week, just two days before her death.

"She was actively focused on geopolitics, on UK politics, quoting statesmen from the '50s, it was quite extraordinary. And she seemed very bright, very focused," he told BBC presenter Fiona Bruce.

"Given how ill she obviously was, how amazing it was that she be so bright and focused. It was a pretty emotional time."

When her death was announced two days later, he said he was moved by the Queen's "sense of duty".

Read more on the story here.