HMS Royalist was launched in 1807. She captured many privateers and letters of marque, most French, but also some from Denmark and the United States. Her crew twice were awarded the Naval General Service Medal. She was instrumental in the capture of a French frigate. The Royal Navy sold her in 1819. She then became a whaler, making three complete voyages. She was condemned after a mishap while on her fourth.

Royal Navy Commander John Maxwell Commander John Maxwell commissioned Royalist in May 1807 for the Downs.

Lloyd's List (LL) reported that Royalist had detained and sent into the Downs Henry, Thompson, master. Henry had been sailing from Amsterdam to New York.LL13 October 1806, №4195.

On 14 December captured the French privateer lugger Providence. Providence carried 14 guns and a crew of 52 men. At the time of the capture, Royalist had joined the pursuit and gun-brigs and were in sight. Royalist brought her into the Downs.LL 15 December 1807, №4211.

Royalist recaptured and sent into Dover Hope, of and from Poole, which a French privateer had captured. Hope had been carrying a cargo of pipe clay.LL 18 December 1807, №4212.

Next, Royalist sent into the Downs Doris and Union, which had been sailing from Rotterdam to the Baltic.LL 21 December 1812, №4213.

On 16 July 1808 Royalist captured the Danish privateer schooner Aristides after a three-hour chase. Aristides was American-built, pierced for 16 guns but with only six mounted; she had a crew of 41 men. She had sailed that morning from "Flodstrand". She had been provisioned for a five-month cruise off the coast of Scotland. Royalists arrival on the scene prevented Aristides from succeeding in capturing an English packet boat off Goteborg. Royalist sent Aristides, which she had captured near the Scaw, into the Downs.LL 2 August 1808, №4274.

On 4 March 1809, Royalist bought into Ramsgate the brig Concordia, of Sunderland. A French privateer lugger had captured Concordia the day before, but when Royalist found the brig she had been abandoned by her captor and crew.LL 3 March 1809, №4333.

On the evening of 1 May 1809 Royalist was some seven or eight leagues north of Dieppe when she encountered five French privateer luggers. Maxwell immediately gave chase and after two hours 15 minutes succeeded in capturing Princesse, of 16 guns and 50 men. The other four privateers made their escape as Royalist was taking on her crew as prisoners. Maxwell was pleased with his catch as Princess had cruised successfully against British trade. Royalist brought her into the Downs the next day.5 May 1809, №4350. was in sight when Royalist captured Princess de Bologna.

In July–September 1809 Royalist was one of the many Royal Navy vessels that participated in the Walcheren Campaign. There was a distribution of prize money after 20 March 1813.

On 17 November Royalist was between Dungeness and the South Foreland where she captured the fast-sailing French privateer Grand Napoléon. Grand Napoléon was armed with 18 guns and had a crew of 75 men. Royalist sent Grand Napoléon into the Downs.LL 21 November 1809, №4409.

In December Royalist captured two more French privateers. On 6 December she captured the French privateer cutter Heureuse Étoile, of two guns and 15 men. Heureuse Étoile had sailed from Dieppe in the evening of 5 December and had not taken any prizes.

On 10 December Royalist captured Beau Marseille (or more correctly Bon Marcel), a privateer lugger of 14 guns and 60 men. Maxwell described her as "a very beautiful Vessel, only Three Months old, and considered one of the fastest Sailers out of Boulogne." One privateer, probably Heureuse Étoile, arrived at Dover on 8 December. Royalist brought another vessel, almost certainly Beau Marseille, captured off Dungeness, into the Downs on 11 December.LL 12 December 1809, №4415. The Royal Navy took Bon Marcel into service as .

Still in December, on the 31st Royalist captured François. a privateer lugger of 14 guns and 60 men. François was three days out of Boulogne and had made no captures. and the hired armed cutter Gambier were in sight on 31 December when Royalist captured François. They therefore shared in the prize money.

Royalist also recaptured two British merchant vessels. One of these two may have been Alpha, recaptured on 26 December. The other may have been Sincerity, which Royalist recaptured and sent into the Downs. Sincerity had been sailing from London to Dartmouth.LL 29 December 1809, №4418. Francois arrived in the Downs.LL 2 January 1810, №4419.

On 24 February 1810 Royalist captured the privateer lugger Prince Eugène, of 14 guns and 55 men. Prince Eugène had left Boulogne that day in the company of three other privateers. She had not made any captures. Prince Eugène arrived in the Downs.LL 27 February 1810, 4436.

This string of successes led to Maxwell receiving a promotion to post captain in June. Also, in 1847 the Navy awarded any still surviving crew members the clasp "Royalist May and June 1810" to the NGSM. (Curiously, the dates on the medal's clasp are wrong.)

Commander George Downie Commander George Downie replaced Maxwell in June 1810 at Portsmouth.

About 4 miles off St. Valery en Caux on 5 December 1810, Royalist captured the privateer lugger Roi de Naples, of 14 guns and 48 men. She was a few hours out of Dieppe and had captured nothing. She came into Dover.LL 11 December 1810, №4513.

Then on 18 December, Royalist was about 15 miles off Fécamp when she took the privateer Aventuriers (Aventurière), of 14 guns and 50 men, a one month old lugger a few days into her first cruise. She had taken nothing. Adventuriers came into the Downs on the next day.LL 21 December 1810, №4521. (unnumbered, p. 333):

Royalist was between Saint-Valery-en-Caux and Fecamp on 3 February 1811 when she sighted a strange sail. Royalist soon made the stranger out to be a privateer lugger and gave chase. A few hours into the chase came up and the two British brigs were able to get the lugger to strike. She was Braconnier, had a crew of 47 men, and had thrown overboard her 10 guns during the chase. She was two days out of St. Valery and had made no captures. was in sight. Braconnier came into the Downs.5 February 1811, №4534.

On 12 August Royalist captured the smuggler Extra. Then on the 18th she captured the smuggler Dove.

On 7 October Royalist chased a privateer but lost her quarry when Royalist lost her main top gallant mast.8 October 1811, №4604.

Then on 19 December Royalist was between Dover and Calais when she captured the privateer Rôdeur after a two-hour chase and an exchange of fire. Rôdeur was armed with 14 guns and had a crew of 60 men. In the engagement Royalist had one man killed and five men wounded; Rôdeur had one man killed and 11 men wounded. Rôdeur, which Royalist had captured between Folkestone and Dungeness, came into Ramsgate.LL 24 December 1811, №4626. Royalist was in company with Skylark and awhen Royalist captured "Rondeur" on 19 December.

On 25 December Royalist captured Po.

On the night of 6 January 1812 Royalist was off Folkestone where after a short chase she captured the French privateer lugger Furet. Furet, of 14 guns and 56 men, and was two days out of Calais. She had taken no prizes.

Also on 6 January Royalist recovered nine barrels of brandy at sea.

On 10 August Royalist captured Pileus, a smuggler.

On 29 December Royalist captured a French privateer lugger Rusé off Hythe, Kent. Rusé, of 16 guns and 65 men, was an entirely new vessel on her first cruise. She one man killed and one wounded, and her main mast was shot away before she surrendered.LL 1 January 1813, 4733. This single-ship action resulted in the Admiralty awarding the surviving claimants the NGSM with clasp "Royalist 29 Decr. 1812".

Commander J.J.Gordon Bremer Commander J.J.Gordon Bremer was in command of Royalist in January 1813, off the northern coast of Spain.

On 3 April took Grand Napoléon after a chase of nine hours. She was 29 days from New York, carrying a valuable cargo to Bordeaux. She was a new vessel of 305 tons, pierced for 22 guns but carrying only four, and had a crew of 43 men. Harris described her as "copper-fastened, and in every respect one of the finest vessels I ever saw." That same day captured the Prussian vessel Enigheidt. , Belle Poule and Royalist shared by agreement. Belle Poule also captured the American schooner Napoléon, which may have been a different vessel than the Grand Napoléon. With respect to Napoléon, Belle Poule was in company with Briton and the hired armed cutter , with and Royalist sharing by agreement.

Royalist shared in the proceeds of the capture of the American schooner Revenge on 11 May.

Since 25 April 1813 a French force, estimated at 13,000 men, had been investing Castro Urdiales on the north coast of Spain. A Spanish garrison of 1200 men, under the command of Don P.P.Alvarez, were holding the town, the French having been forced out in 1812. On 4 May a small squadron of three British brigs, under Commander Robert Boyle, Rattler, and , had come to aid the Spaniards. The French were erecting batteries to the west and south-west of the town. The British landed two 24-pounder guns, which Sparrow was carrying, to arm two counter batteries. During the day Royalist or Sparrow blockaded Portugalete (Bilbao's port), about 12 miles east, to prevent the French using the port. At night, boats from the two vessels patrolled the port. At some point the schooner joined the effort. The French forces eventually succeeded in overwhelming the Spaniards. Boyle retrieved the guns Sparrow had landed and the British forces manning them. On the 11th, the Spaniards resisted the French in house-to-house fighting and were able to destroy the cannons in the castle. The four British vessels evacuated the Spanish forces and many of the town's inhabitants. The next day the British landed at Bermeo the troops and civilians they had taken on. Spanish casualties amounted to about 50 men killed and a like number wounded. British casualties amounted to four men from Royalist and six from Sparrow wounded, one severely.

Royalist and the privateer Earl St. Vincent on 31 May captured the American schooner Governor Gerry, of 225 tons, six guns, and 18 men. Governor Gerry was sailing from Lorient to New York with a cargo of brandy and wine. Governor Girard arrived at Plymouth on 6 June.ll 11 June 1813, №4777.

On 6 September 1813 Royalist captured the American letter of marque schooner , after a four-day chase. Ned, of 280 tons, pierced for 16 guns but carrying six, and with a crew of 45 men, was sailing from New York to Bordeaux. Ned had left New York on 1 August in advance of an expected order from the American government placing an embargo on all ports.LL 24 September 1813, №4807. Ned, Hatchet, master, came into Plymouth.21 September 1813, №4806. and were in sight at the time of the capture.

On 20 October 1813, Royalist came up with , which was following . The two British captains decided to attack Weser. They engaged her for about an hour and a half before they had to withdraw to repair their rigging. At about this time a third British vessel, the fourth rate came up. The next morning, as Rippon and Royalist sailed towards Scylla to renew their attack, Weser sailed towards Rippon and struck, after first firing two broadsides towards Scylla. Scylla suffered only two men wounded in the entire engagement. Royalist suffered more heavily, having two men killed and nine wounded. Weser lost four men killed and 15 wounded. The Royal Navy took her into service as HMS Weser.

On 18 December Royalist captured the American letter of marque Antoinette (or Marie Antoinette). Antoinette, of 240 tons, two guns, and 20 men, was sailing from Philadelphia to Bordeaux. Royalist had chased Antoinette into Basque Roads where she had run on shore. Royalist was able to get her off and brought her into Plymouth on 1 January 1814.LL 4 January 1814, №4834.