However, in theory any Commonwealth unit can provide the guard. On many occasions, the Gurkhas, RAF Regiment and Royal Marines have provided the guard, while a handful of units from other Commonwealth countries have also done so (see below). Only one unit has come from a Commonwealth country of which the Queen is not head of state, namely the 1st Battalion Royal Malay Regiment in 2008.
Unlike the Gurkhas and the Royal Marines, the RAF Regiment has a dedicated ceremonial unit, the Queen's Colour Squadron. It is this that represents the RAF whenever it provides the Queen's Guard.
Prior to Options for Change, because there were a total of eight guards battalions, it was rare for battalions of line infantry to mount the Queen's Guard and, as such, was a significant honour. Before 1996, only two battalions had served on public duties as part of an operational tour in London District. However, when the 2nd Battalions of the Grenadier Guards, Coldstream Guards and Scots Guards were put in suspended animation, a decision to replace one of the three Foot Guard battalions then engaged on public duties by a line infantry battalion was taken, so as to enable the Foot Guards battalion to increase the proportion of its effort employed on training for operational roles. Since 1996, a line infantry battalion has been stationed at Hounslow under the command of London District:
During series 4 of the ITV television series Soldier Soldier, the fictional regiment portrayed in the series, the King's Own Fusiliers, was posted to London District to perform public duties.
In 1928 and again in 1958 the Honourable Artillery Company, a Territorial Army Unit provided the Queen's Guard.
One of the public duties battalions or incremental companies is responsible for providing the guard at Windsor Castle. The location of the ceremony at Windsor varies; in the summer, when the Queen is in residence it usually takes place on the lawn in the Castle's quadrangle. In wet weather or winter to protect the lawn, or when the Queen is not in residence, the ceremony occurs outside the Guardroom by Henry VIII's Gateway at the foot of Castle Hill.
A detachment of the regiment on guard at Buckingham Palace and St James's Palace is also responsible for providing the guard at the Tower of London. As the Tower is still officially a royal residence, and is also the location of the crown jewels, it remains the army's obligation to guard it. The Tower guard numbers one officer, 6 NCOs and 15 soldiers, and usually posts a sentry outside the Jewel House and one outside the Queen's House. As the protection of the Tower is their responsibility (in conjunction with the Yeomen Warders, and the Jewel House wardens), the guard must also see it is secure at night. (see Ceremony of the Keys).
The Guard is also mounted in Edinburgh at the Palace of Holyroodhouse, the Queen's official residence in Scotland, and at Edinburgh Castle. Unlike in London, there is no Guards battalion permanently based in the city, so the guard is provided by whichever the resident infantry battalion is at Redford Barracks in the city. The guard is not mounted throughout the year — it is usually mounted daily during the week that the Queen spends at the palace (prior to her summer break at Balmoral), and during the Lord Commissioner's Week. Until 2002, sentries were permanently posted on the Esplanade at the entrance of the castle, ostensibly as the guards to the Honours of Scotland housed inside. The sentries were changed every hour. However, cutbacks in the size of the army led to the permanent castle guard being abolished — now, the guard is mounted at the same time as the guard at the Palace, or when there is a royal visitor to Edinburgh. Sentries are also posted during the month of the Edinburgh Military Tattoo, usually from a unit that has an anniversary from the year.
As part of the reorganisation of the infantry, the 1st and 2nd Battalions, Royal Regiment of Scotland (the Royal Scots Borderers and Royal Highland Fusiliers) will be permanently based in Edinburgh, rotating between 19 Light Brigade or 52 Infantry Brigade. Whichever battalion is assigned to 52 Brigade would then be responsible for performing public duties in Edinburgh.
This is not the first occasion that women have provided the Queen's Guard. In 2000, the Australian Federation Guard performed public duties in London for a month, and included several women amongst its number.
The following is a list of units from the British Empire and Commonwealth to have mounted the King's Guard/Queen's Guard.
The Changing of the Guard takes place in the forecourt of Buckingham Palace at around 11am. The St. James' Palace detachment of the Queen's Guard, led usually by the Corps of Drums, and bearing the Colour (if the Queen is in residence, then this will be the Queen's Colour; if she is not, then it is the Regimental Colour), marches along the Mall to Buckingham Palace, where the Buckingham Palace detachment has formed up to await their arrival. These two detachments are the Old Guard. Meanwhile the New Guard is forming up and are awaiting inspection by the Adjutant on the parade square at Wellington Barracks. The Band, having been inspected by the Adjutant, forms a circle to play music whilst the New Guard is inspected. The Guard provides a full Military Band consisting of no fewer than 35 musicians (usually, though not always, from one of the Guards regiments) accompanied by their Director of Music. When the New Guard is formed up, led by the Band, it marches across into the forecourt of Buckingham Palace. Once there, the New Guard advances towards the Old Guard in slow time and halts. The Old Guard presents arms, followed by the New Guard presenting arms. The Captains of the Guards march towards each other for the handing over of the Palace keys. The new reliefs are marched to the guardrooms of Buckingham Palace and St James' Palace where new sentries are posted.
During this time the Band has taken its place by the centre gate, formed up in a half-circle, where it plays music to entertain the New and Old Guard as well as the watching crowds. During this period, the two regimental colours are paraded up and down by the Ensigns (usually junior officers of 2nd Lieutenant rank or equivalent). With the Old and New Guards formed up once again, the Old Guard and the Band marches out through the centre gates in slow time to their Regimental Slow march played by the Band. At the end of the slow march the Captain of the Old Guard gives the word of command to 'Break into Quick Time' and with a brisk five pace roll from the drums, the Band leads the way back to Wellington Barracks.
| Date | July | August | September | October | November | December |
|---|---|---|---|---|---|---|
| 1st | 1st Bn, Grenadier Guards | F Coy, Scots Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | Nijmegen Company, Grenadier Guards |
| 2nd | 1st Bn, Grenadier Guards | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 3rd | 1st Bn, Grenadier Guards | No 7 Coy, Coldstream Guards | 48 Hour Guard | 48 Hour Guard | Nijmegen Company, Grenadier Guards | F Company, Scots Guards |
| 4th | Nijmegen Coy, Grenadier Guards | 48 Hour Guard | 1st Bn, Irish Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 5th | 1st Bn, Grenadier Guards | Nijmegen Coy, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | 1st Bn, Worcestershire and Sherwood Foresters Regiment |
| 6th | 1st Bn, Grenadier Guards | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 7th | Nijmegen Coy, Grenadier Guards | No 7 Coy, Coldstream Guards | 48 Hour Guard | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Grenadier Guards |
| 8th | 1st Bn, Grenadier Guards | 48 Hour Guard | 1st Bn, Irish Guards | 1st Bn, Worcestershire and Sherwood Foresters Regiment | 48 Hour Guard | 48 Hour Guard |
| 9th | Nijmegen Coy, Grenadier Guards | F Coy, Scots Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | 1st Bn, Irish Guards |
| 10th | 48 Hour Guard | 48 Hour Guard | 1st Bn, Irish Guards | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard |
| 11th | Queen's Colour Squadron | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Worcestershire and Sherwood Foresters Regiment |
| 12th | Nijmegen Coy, Grenadier Guards | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 13th | Queen's Colour Squadron | 1st Bn, Irish Guards | 48 Hour Guard | 1st Bn, Grenadier Guards | 1st Bn, Grenadier Guards | |
| 14th | Nijmegen Coy, Grenadier Guards | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 15th | Queen's Colour Squadron | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Irish Guards |
| 16th | 1st Bn, Grenadier Guards | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 17th | 1st Bn, Grenadier Guards | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | 1st Bn, Worcestershire and Sherwood Foresters Regiment |
| 18th | Queen's Colour Squadron | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 19th | 1st Bn, Grenadier Guards | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Irish Guards | 1st Bn, Irish Guards |
| 20th | Queen's Colour Squadron | 48 Hour Guard | 1st Bn, Grenadier Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard |
| 21st | No 7 Coy, Coldstream Guards | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | F Company, Scots Guards | 1st Bn, Worcestershire and Sherwood Foresters Regiment |
| 22nd | Queen's Colour Squadron | 48 Hour Guard | No 7 Company, Coldstream Guards | Nijmegen Company, Grenadier Guards | 48 Hour Guard | 48 Hour Guard |
| 23rd | No 7 Coy, Coldstream Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | Nijmegen Company, Grenadier Guards |
| 24th | F Coy, Scots Guards | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Irish Guards | 48 Hour Guard | 72 Hour Guard |
| 25th | No 7 Coy, Coldstream Guards | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard | F Company, Scots Guards | 72 Hour Guard |
| 26th | F Coy, Scots Guards | 48 Hour Guard | No 7 Company, Coldstream Guards | Nijmegen Company, Grenadier Guards | 48 Hour Guard | No 7 Company, Coldstream Guards |
| 27th | Queen's Colour Squadron | 1st Bn, Grenadier Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Irish Guards | 48 Hour Guard |
| 28th | F Coy, Scots Guards | 48 Hour Guard | Nijmegen Company, Grenadier Guards | 1st Bn, Grenadier Guards | 48 Hour Guard | 1st Bn, Grenadier Guards |
| 29th | Queen's Colour Squadron | 1st Bn, Irish Guards | 48 Hour Guard | 48 Hour Guard | 1st Bn, Grenadier Guards | 48 Hour Guard |
| 30th | F Coy, Scots Guards | 48 Hour Guard | No 7 Company, Coldstream Guards | Nijmegen Company, Grenadier Guards | 48 Hour Guard | No 7 Company, Coldstream Guards |
| 31st | No 7 Coy, Coldstream Guards | 1st Bn, Irish Guards | 48 Hour Guard | 72 Hour Guard |
In 2005-06, the public duties battalions were changed; the 1st Battalion, Royal Gloucestershire, Berkshire and Wiltshire Regiment was replaced by the 1st Battalion, Worcestershire and Sherwood Foresters Regiment (29th/45th Foot) at Hounslow in the summer of 2005, while in April 2006 the 1st Battalion, Welsh Guards replaced the 1st Battalion, Irish Guards at Wellington Barracks and the 1st Battalion, Grenadier Guards was replaced at Windsor by the 1st Battalion, Coldstream Guards. Due to the time required for working up into the public duties role, the Queen's Colour Squadron, which is a readily available ceremonial unit based at RAF Uxbridge, was drafted into the schedule for July 2005, replacing the Royal Gloucestershire, Berkshire and Wiltshire Regiment, and again in March 2006, while the Coldstream Guards worked up to its public duties role. It can be assumed that the Queen's Colour Squadron will continue until the Welsh Guards are ready to assume public duties. The Queen's Colour Squadron are also available when a battalion is deployed on operations; this is due to the infantry battalions based in London District being made available for operational deployments at any time. In late 2006, the 1st Battalion, Welsh Guards was deployed for a six month tour to Bosnia, while in early 2007 the 1st Battalion, Worcestershire and Sherwood Foresters Regiment was placed on standby to be deployed to Afghanistan. In 2007, two of the three infantry battalions attached to London District, were unavailable for public duties. The 1st Battalion, Worcestershire and Sherwood Foresters Regiment was deployed in Afghanistan, while the 1st Battalion, Coldstream Guards was in preparing to be deployed in September. As a consequence, several units from the combat support and combat service support arms were called to perform public duties. Below is a list of units called up during the month of July 2007:
In addition, following a request from the British Government, a company from the 1st Battalion Jamaica Regiment was invited to undertake public duties for a month between July and August as part of the celebrations of the 45th anniversary of Jamaica's independence.
The guard is changed daily at both Buckingham Palace and Windsor Castle from April to July. From August to March, the guard is changed at both sites on alternate days.
The Queen's Life Guard is the mounted guard at the entrance to Horse Guards. Horse Guards is the official main entrance to both St James's Palace and Buckingham Palace (a tradition that stems from the time when The Mall was closed at both ends); however, sentries have been posted there since the Restoration, when the Palace of Whitehall was the main royal residence. The guard is on horseback from 10am until 4pm, with the two sentries changing every hour. From 4pm until 8pm a pair of dismounted sentries remain. At 8pm, the gates of Horse Guards are locked, and a single sentry remains until 7am.
When The Queen is in London, the Guard consists of 1 Officer, 1 Corporal Major (who carries the Standard), 2 Non-Commissioned Officers, 1 Trumpeter and 10 Troopers. This is known as a Long Guard. When Her Majesty is not resident in London, the Guard is reduced to 2 Non-Commissioned Officers and 10 Troopers. This is known as a Short Guard.
The guard is usually provided by the Household Cavalry Mounted Regiment, with the Life Guards and the Blues and Royals alternating. When the HCMR leaves London for a month of summer training (and vacation for the horses), the guard is provided by the King's Troop, Royal Horse Artillery. Only two other regiments have had the honour of mounting the Queen's Life Guard; the Royal Canadian Mounted Police did so leading up to the Coronation of King George VI. Lord Strathcona's Horse did so in 2000 during the same period as the Royal Canadian Regiment provided the Queen's Guard.
At the time of Guard Changing, the Old Guard forms up on the north side of the enclosure on Horse Guards Parade and the New Guard on the south side. As the New Guard arrives, each Guard carries the Standard and the Trumpeters of both Old and New Guards sound the Royal Salute on the arrival of the New Guard and on the departure of the Old Guard. When both Guards have formed up in the enclosure, the Corporal Major, Senior NCO and the sentries of the first relief of the New Guard leave for the Guard Room which is then handed over. The sentries of the Old Guard, after being relieved, rejoin the remainder of the Old Guard on the north side of the enclosure. The Standard and Trumpeters are only on parade with a Long Guard.