1st battalion 95th Rifles light regiment of Foot
The 95th Rifles differ from other regiments in the British army in that they use Rifles instead of Muskets, the advantage being greater accuracy, the disadvantage slower reloading speed.
The 95th Rifles are also very well known from the Sharpe series by Bernard Cornwell.
Uniform:
In my opinion this site is the best source of uniform reference for the 100 days (Waterloo) campaign: