The naval force, consisting of Her Majesty’s sloops “Philomel,” “Harlequin,” “Niger,” and “Waterwitch,” and the gun-vessels “Bloodhound” and “Volcano,” assembled off Lagos bar in November 1851; and at daybreak on the 25th of that month the ships’ boats, manned and armed, and towed by the “Bloodhound,” entered the river and proceeded towards Lagos. As the consul still had some hope of the king submitting to a display of force, the flags of truce were kept flying; and, although, on rounding the first point, the enemy opened a harassing fire of musketry along the right bank of the river, the fire was not returned, and the boats kept steadily on, with the flags flying, until they arrived at about a mile from the town.

There the “Bloodhound” got aground in the mud, and the enemy’s fire increased, the shot falling fast and thick among the boats. The boom of heavy ordnance showed that Kosoko was much better prepared for defence than had been supposed; the flags of truce were hauled down, and the British, for the first time, opened fire.

The enemy were mustered in great force, and, being armed with good muskets, kept up an incessant fire from behind stockades and mud-walls upon the boats. They even endeavoured to send a body of men across the river in canoes so as to take the British in rear, but this movement was at once intercepted.

The fire from the boats producing but little effect, it was determined to land a party. The boats accordingly pulled in simultaneously for one spot, and about 160 men were landed, the remainder guarding the boats.

The natives made a most determined resistance and an exceedingly skilful use of the advantages of their position. The town, or at least that part of it where the seamen landed, consisted of narrow streets intersecting each other in every direction. The British were thus exposed to a flanking fire down every street which debouched on the line of advance; and the natives, when driven from one post, ran by back-alleys to take up a new position further on. After advancing some three hundred yards, and finding the resistance by no means diminished, but, on the contrary, that the number of opponents increased at every turning, and having already suffered a loss of two officers killed and seven men wounded, it was determined that to continue the advance would be imprudent. All the neighbouring houses were therefore set on fire, and the force returned to the boats, and thence to the “Bloodhound.” The fire continued to burn with great fury for some hours, and two heavy explosions were heard; but there was no wind, and the houses destroyed formed but a very small portion of the whole town.

In consequence of this repulse the attack of Lagos in force was ordered, and it was determined to dethrone Kosoko and to replace Akitoye on the throne. A naval force was concentrated, consisting of the “Sampson,” “Penelope,” “Bloodhound,” and “Teazer,” the whole being under the command of Commodore H. W. Bruce. On December 24th, 1851, the boats crossed the bar, and the “Bloodhound” dropped up the river with the tide to reconnoitre. Three guns from the south end of the island opened on her but did no damage, for the fire, though exceedingly well directed, was faulty in elevation.

The plan of attack arranged was that the boats should pass the lines of defence as quickly as possible, go round the northern point of the island, and there make the bombardment, where Kosoko and the principal slave-dealers resided. The line of sea-defence extended from the southern point of the island to the northern, along the western front, a distance of nearly two miles. In parts, where the water was sufficiently deep for boats to land, stakes in double rows had been planted in six feet of water, and along the whole of the distance an embankment and ditch for the protection of infantry had been constructed; while at special points exceedingly strong stockades, made of stout cocoa-nut trees, were erected for guns.

On the 26th at daybreak the “Bloodhound” proceeded up the river with the boats of the “Sampson” in two divisions, the one in front the other following. The “Teazer” followed with the boats of the “Penelope” similarly arranged, and accompanied by the consul’s iron boat “Victoria,” fitted for rockets. The enemy immediately opened a heavy fire of guns and musketry, the whole line of the embankment being filled with men, of whom nothing was visible but the muzzles of their muskets. The fire was returned from the British guns, but produced little effect, as the shot could not do much injury to the green wood of the stockades.