The Battle of Edgehill was a pitched battle of the First English Civil War. It was fought near Edge Hill and Kineton in southern Warwickshire on Sunday, 23 October 1642.

The First Battle of Newbury was a battle of the First English Civil War that was fought on 20 September 1643 between a Royalist army, under the personal command of King Charles, and a Parliamentarian force led by the Earl of Essex. Following a year of Royalist battlefield successes, in which they took Banbury, Oxford and Reading without conflict before storming Bristol, the Parliamentarians were left without an effective army in the west of England. When Charles laid siege to Gloucester, Parliament was forced to muster a force under Essex with which to beat Charles' forces off. After a long march, Essex surprised the Royalists and forced them away from Gloucester before beginning a retreat to London. Charles rallied his forces and pursued Essex, overtaking the Parliamentarian army at Newbury and forcing them to march past the Royalist force to continue their retreat.

The Battle of Adwalton Moor occurred on 30 June 1643 at Adwalton, West Yorkshire, during the First English Civil War. In the battle, the Royalists loyal to King Charles led by the Earl of Newcastle soundly defeated the Parliamentarians commanded by Lord Fairfax.

The Battle of Turnham Green took place on 13 November 1642 near the village of Turnham Green, at the end of the first campaigning season of the First English Civil War. The battle resulted in a standoff between the forces of King Charles I and the much larger Parliamentarian army under the command of the Earl of Essex. In blocking the Royalist army's way to London immediately, however, the Parliamentarians gained an important strategic victory as the standoff forced Charles and his army to retreat to Oxford for secure winter quarters.

The Battle of Brentford was a small pitched battle which took place on 12 November 1642 in Brentford, Middlesex, between a detachment of the Royalist army under the command of Prince Rupert, and two infantry regiments of Parliamentarians with some horse in support. The result was a victory for the Royalists.

The Battle of Roundway Down was fought on 13 July 1643 at Roundway Down near Devizes, in Wiltshire during the First English Civil War. Despite being outnumbered and exhausted after riding overnight from Oxford, a Royalist cavalry force under Lord Wilmot won a crushing victory over the Parliamentarian Army of the West under Sir William Waller.

The Battle of Winceby took place on 11 October 1643 during the First English Civil War near the village of Winceby, Lincolnshire. In the battle, a Royalist relieving force under the command of Sir William Widdrington was defeated by the Parliamentarian cavalry of the Earl of Manchester.

The battle of Powick Bridge was a skirmish fought on 23 September 1642 south of Worcester, England, during the First English Civil War. It was the first engagement between elements of the principal field armies of the Royalists and Parliamentarians. Sir John Byron was escorting a Royalist convoy of valuables from Oxford to King Charles's army in Shrewsbury and, worried about the proximity of the Parliamentarians, took refuge in Worcester on 16 September to await reinforcements. The Royalists despatched a force commanded by Prince Rupert. Meanwhile, the Parliamentarians sent a detachment, under Colonel John Brown, to try to capture the convoy. Each force consisted of around 1,000 mounted troops, a mix of cavalry and dragoons.

The Battle of Hopton Heath was a part of the First English Civil War, fought on Sunday 19 March 1643 between Parliamentarian forces led by Sir John Gell, 1st Baronet of Hopton and Sir William Brereton, 1st Baronet and the Royalist forces under Spencer Compton, 2nd Earl of Northampton.

The First English Civil War battle of Lansdowne, or Lansdown, was fought on 5 July 1643, at Lansdowne Hill, near Bath, Somerset, England. Although the Royalists under Lord Hopton forced the Parliamentarians under Sir William Waller to retreat from their hilltop position, they suffered so many casualties themselves and were left so disordered and short of ammunition that an injured Hopton was forced to retire.

The first siege of Hull marked an escalation in the conflict between King Charles I and Parliament during the preliminaries of the First English Civil War. Charles sought to secure the large arsenal held in Kingston upon Hull, East Riding of Yorkshire. He first approached the town in late April 1642 and was rebuffed by the town's Parliamentarian governor, Sir John Hotham. Charles retreated to York but in July he received news that Hotham might be willing to hand over the town if the Royalists approached with force large enough for Hotham to surrender with his honour intact.

The Siege of Plymouth, August 1642 to February 1646, took place during the First English Civil War, when Royalist forces besieged the Parliamentarian-held port of Plymouth in Devon.

The Battle of Braddock Down took place during the south-western campaign of the First English Civil War. It was fought on open ground in Cornwall, on 19 January 1643. An apparently easy victory for the Royalists under Sir Ralph Hopton secured Cornwall for King Charles and confirmed Hopton's reputation as a commander. Hopton also gained respect for the mercy shown to his foe, of whom 1,500 were captured during and after the battle. The precise location of the battlefield is a matter of dispute, though English Heritage believe it to be within parkland at Boconnoc.

The Battle of Chalgrove Field took place on 18 June 1643, during the First English Civil War, near Chalgrove, Oxfordshire. It is now best remembered for the death of John Hampden, who was wounded in the shoulder during the battle and died six days later.

The Battle of Gainsborough took place during the First English Civil War on 28 July 1643. The strategically important town of Gainsborough, Lincolnshire, was a Royalist base used for harassing the Parliamentarians who were generally dominant in Lincolnshire, but it was taken by Parliamentarians in July 1643. An attempt to recapture Gainsborough by Charles Cavendish and the Royalists was foiled in a battle in which Colonel Oliver Cromwell distinguished himself as a cavalry leader.

The siege of Portsmouth was the siege of a Royalist garrison in Portsmouth by a Parliamentarian force conducted in the early part of the First English Civil War. The siege resulted in Portsmouth falling to Parliament after a little under a month of conflict.

The battle of Babylon Hill was an indecisive skirmish that took place between Royalist and Parliamentarian forces near Yeovil, in South West England, on 7 September 1642, during the early stages of the First English Civil War. The engagement occurred after a failed Parliamentarian siege of nearby Royalist-held Sherborne. After the Parliamentarians had retreated to Yeovil, a force of around 350 Royalists was sent to reconnoitre their movements. Under the command of Sir Ralph Hopton, the Royalist detachment established itself on Babylon Hill, on the outskirts of Yeovil.

The Battle of Aylesbury was an engagement which took place on 1 November 1642, when Royalist forces, under the command of Prince Rupert, fought Aylesbury's Parliamentarian garrison at Holman's Bridge a few miles to the north of Aylesbury. The Parliamentarian forces were victorious, despite being heavily outnumbered.

The siege of Reading was an eleven-day blockade of Reading, Berkshire during the First English Civil War. Reading had been garrisoned by 3,000 Royalist troops under Sir Arthur Aston in November 1642. On 14 April 1643, Robert Devereux, 3rd Earl of Essex led a Parliamentarian army of 19,000 troops to lay siege to the town, and began bombarding it two days later.

The First Battle of Middlewich took place on 13 March 1643, during the First English Civil War, and was fought between the Parliamentarians, under Sir William Brereton, and the Royalist supporters of King Charles I of England, under Sir Thomas Aston.

The siege of Gloucester took place between 10 August and 5 September 1643 during the First English Civil War. It was part of a Royalist campaign led by King Charles I to take control of the Severn Valley from the Parliamentarians. Following the costly storming of Bristol on 26 July, Charles invested Gloucester in the hope that a show of force would prompt it to surrender quickly and without bloodshed. When the city, under the governorship of Lieutenant-Colonel Edward Massey, refused, the Royalists attempted to bombard it into submission. Massey adopted an aggressive defence, and the Royalist positions outside the city were regularly disrupted by Parliamentarian raids. The Royalist artillery proved inadequate for the task of siege work and, faced with a shortage of ammunition, the besiegers attempted to breach the city walls by mining. With Royalist miners about to reach the city's east gate and the defenders critically low on gunpowder, a Parliamentarian army led by the Earl of Essex arrived and forced Charles to lift the siege.

The siege of Basing House near Basingstoke in Hampshire, was a Parliamentarian victory late in the First English Civil War. Whereas the title of the event may suggest a single siege, there were in fact three major engagements. John Paulet, 5th Marquess of Winchester owned the House and as a committed Royalist garrisoned it in support of King Charles I, as it commanded the road from London to the west through Salisbury.