they are able to practice the movements along the processional route.

it is the biggest military ceremonial events seen in this country for seven decades, since the coronation of queen elizabeth ii in 1953. tens of thousands of people will line the procession visits and tens of millions will watch around the globe. so the pressure to make sure no food or hoof is out of place is huge. just to line a baking is to bring you related to buckingham palace. police say they have arrested a man outside the palace. it is early tuesday

night. hours before the rehearsal is due to kick off. right in front of buckingham palace, a reminder of the important role the security services will play making sure everything goes according to plan. a man is detained by police after suspected shotgun cartridges were thrown into the palace grounds. according to put in the area and a precautionary controlled explosion carried out. it is being treated according to the met police as an isolated mental health incident. once the security incident concludes, the military rehearsal gets under way.

to the delight of those who have made their way specially to watch, and the surprise of people who just happened to find themselves surrounded by thousands of service personnel. for those who were very brave members of the public to stay up members of the public to stay up all night we used to call these things and early morning rehearsal so now it is very much an overnight rehearsal. you're thousands of troops from the army coming to this sort of assembly area and wellington barracks and everyone was

forming up and heading out to the various points on the street lining are on the procession, ready to step. it is very rare that you get, you know, all vigilance of the household division together with all their colours. that's a special occasion. just a unique moment in our history. there are two processions. one takes the royals from buckingham palace to westminster abbey. buckingham palace to westminsterabbey. it buckingham palace to westminster abbey. it is known as the king's procession.

we are the very front horse of the entire king's procession from buckingham palace to westminster abbey and then back again, safely. it is absolutely incredible. it is not only once incredible. it is not only once in a career opportunity but it is a once—in—a—lifetime opportunity and i am so, so lucky to be given the chance to do that. the return journey back to the streets of central london is known as the coronation procession.

both will be scrutinised in exacting detail. tonight, it must be rehearsed, finessed and made ready for the big day. as well as the military, the carriages set to be used are all part of the rehearsal. on the way to the abbey, the royal party will travel in their state coach. used for the first time at the state opening of parliament in 2014, it has electric windows, and shock absorbers, making for a very comfortable ride.

it is an important day for everyone involved. lots of care and preparation has been taken to ensure every movement information in the king's coronation is perfect. up up until now, rehearsals have had to take place out of the capital. tonight, troops can practice moving around the actual monuments. every step carefully observed under the watchful eye of

senior officials on the lookout for any potential problems. under the cold, night sky, the band matches —— marches on. the procession then reaches westminster abbey.

the moment of arrival. rehearsed exactly as it will be on coronation morning. the steps of the diamond jubilee state coach had carefully unfolded to allow the king and queen consort to safely dismount. the route travels along some of the busiest roads in central london. they cannot simply be closed off every time a need to

practice the drills.— practice the drills. you're on the street — practice the drills. you're on the street you're _ practice the drills. you're on the street you're going - practice the drills. you're on the street you're going to i practice the drills. you're on| the street you're going to be parading on on saturday and therefore, for each person on parade, they are looking for the small details, the small markers, the ground that got to march across, the distance and the people in front and behind now be focusing rather more on that than the crowd behind the crowd barriers. the entire route is mapped out exactly using a paste stick, keeping everything at the correct distance. —— pace stick.

while the ceremony is happening inside the abbey, personnel will form up in whitehall and the mound. they'll set off as soon as the king and queen leave westminster abbey and join the rear of the procession. the ceremony inside the abbey is set to last two hours, after which the newly crowned king and queen will return back to buckingham palace. the timekeepers would stopwatches at the ready expected to be not long after 1:30pm.

next time the soldiers walk down the streets, they, officials hope, will be lined with crowds. all aiming to get a look at the royal couple. well into the early hours, they march on.

tonight, the streets are empty. come morning they will be full once more. numberone number one division, prepare to halt! _ numberone number one division, march!

on the day, there will be a long wait for the service continues. possibly in the rain and in full view of the crowd who will be lining the streets. eyes for a wait and wait for the command. —— eyes forward.

i think the important thing is that everyone involved puts a huge amount of work into it and there is a professionalism and skill of the young moment of the armed forces delivers what i hope will be an amazing parade on saturday. —— young men and women of the armed forces. ., , men and women of the armed forces. . , ., men and women of the armed forces. ., , ., ,, forces. king charles and queen camilla will— forces. king charles and queen camilla will travel— forces. king charles and queen camilla will travel back - forces. king charles and queen camilla will travel back in - camilla will travel back in buckingham palace in the gold state coach just as queen elizabeth ii did in 1953.

it is the most spectacular —looking coach, notoriously uncomfortable, though, with the late queen describing riding in it as horrible. at 260 years old, it does not have mod cons and definitely no shock absorbers to smooth the ride.

the return journey is a much grander affair, the return journey is a much granderaffair, involving around 4000 military.

as well as looking spectacular, the processions will sound extraordinary as well. marching bands from all three armed forces will provide a styling soundtrack guaranteed to get the crowd's feet tapping.

i'm immensely proud because i've been_ i'm immensely proud because i've been heavily involved in the planning of the event since november. so it means an awful

lot and _ november. so it means an awful lot and i— november. so it means an awful lot and i think, you know, just seeing — lot and i think, you know, just seeing the _ lot and i think, you know, just seeing the scale of the event over— seeing the scale of the event over last _ seeing the scale of the event over last night and seeing 7000 8000 _ over last night and seeing 7000 8000 personnel in london delivering that event was incredible. but i'm also looking _ incredible. but i'm also looking forward to seeing how the nation reacts on saturday because _ the nation reacts on saturday because it is going to galvanise a nation and hopefully, you know, everybody will appreciate what unites us and not — will appreciate what unites us and not what keeps us apart. the late queen's procession back to buckingham palace took around two hours and was much,

much longer than king charles�*s will be. she travelled around much of central london including regent street and piccadilly circus. on saturday, as rehearsals practice tonight, the king and queen will return the way they came with the journey back expected to take around 33 minutes. as the commander—in—chief of the armed forces, the monarch

has a special link with the military and they will form up in the garden of buckingham palace. there, they will be joined by king charles and queen camilla, who will receive a royal salute. a successful rehearsal. now, onto the main event. as the sun rises over london, the armed forces return to their accommodation. they know that, come saturday, the drills, practice tonight, will be recorded in history, forever.

hello there. the coronation is almost here and the heavy showers that we had on friday, those have been fading away. we had some late in the day lovely rainbows, but earlier on, there was a lot of thunder and lightning. those have pushed clear, but we need to look to the south now into the english channel. this is where our weather is now coming from, the cloud thickening up and these weather fronts will bring some rain. so this is the forecast for the coronation in central london. looks cloudy, there'll be some rain from time to time. temperatures are not going to be as high as the 20 celsius that we had on friday. we start with ten degrees in london first thing on saturday, seven or eight further north, just one of two

showers left over here. but we've got this patchy rain here developing in southern england, moving steadily northwards into wales, the midlands, eventually into east anglia and lincolnshire. for northern england, scotland, northern ireland, some sunny spells breaking out, but also some heavy showers developing. in between those heavy showers in the sunshine, temperatures could reach 17 or 18 degrees under the cloud and the rain across england and wales nearer 14 or 15 celsius. there could be some wet weather into the night as well before finally pushing away out into the north sea. and then we'll see some sunny spells on sunday, but also some showers, more likely to have those showers in scotland and down the eastern side of england. so further west, you may get away with a dry day. with some sunshine around, it should be a bit warmer for most areas. temperatures peaking at 20 or 21 celsius across the southeast in the afternoon. but if we look to the west, more weather fronts are beginning to pile in from the atlantic. and during the evening and overnight, we're going to find rain pushing its way eastwards across the whole of the country. so bank holiday monday starts cloudy with some rain around as well. that rain may be pushing its way eastwards, but it will be followed by some sunshine and some showers. these could be heavy and thundery, particularly in northern ireland and western

parts of scotland. temperatures while not quite as high, at around about 16—18 celsius. so a real mixture of weather, ithink, over the coronation weekend. unfortunately, there is rain in the forecast for many of us. wet weather developing on saturday, fewer showers on sunday, but then we're back into some heavy showers on monday. and this very mixed picture continues into next week. we're on the cooler side of the jet, so temperatures nothing to write home about. there'll be some sunshine, but showers never too far away.

it is 3am in london — coronation day in the united kingdom. you're looking at westminster abbey. just hours from now, king charles iii will be crowned, along with the queen consort camilla, in front of 2,300 guests watching in person, and tens of millions of others around the world following along. it is an historic moment — charles becomes the 40th reigning monarch to be crowned there since 1066. a historic day in the united kingdom, and the bbc will have coverage from london, the 14 countries in the commonwealth, and all over the globe, bringing you the regalia, processions and ancient rituals.