Don't discount the officers of the East India Company and the Volunteers raised and stationed in Great Britain during the Napoleonic wars.
Great Britain had a huge number of men under arms during this period who weren't restricted to the regular army supply chains or regulations. Many wealthy businessmen raised and self-funded volunteer or yeomanry companies that did little more than parade on the weekends to impress the girls. Looking at the period art, there is quite a variation from regulation in both the uniforms and swords carried.
![Name: Light Cavalry Officers 1806.jpg
Views: 629
Size: 141.3 KB](http://www.vikingsword.com/vb/attachment.php?s=a026cb2cee26a5fa58a1fac18df9ad2e&attachmentid=232004&d=1700518887)
Light Cavalry Officers 1806
![Name: London Volunteer Corps 01.jpeg
Views: 636
Size: 163.4 KB](http://www.vikingsword.com/vb/attachment.php?s=a026cb2cee26a5fa58a1fac18df9ad2e&attachmentid=232005&d=1700518887)
London's Volunteer corps 1799
(note the sabres with steel and gilt hilts, and two of the soldiers look to have the 'flank company' shoulder boards.)
![Name: Loyal Volunteers on Parade 01.jpeg
Views: 587
Size: 128.5 KB](http://www.vikingsword.com/vb/attachment.php?s=a026cb2cee26a5fa58a1fac18df9ad2e&attachmentid=232006&d=1700518887)
Loyal Volunteers on Parade 1803
(the three officers carry spadroons that look like the 1796 Pattern while the fourth on the left has a sabre in a leather scabbard).