Richard Simkin
Born in 1851, Richard Simkin became the most prolific illustrator of
British and Colonial military uniforms. His series of British military types which was inserted in the Army and Navy Gazette and is shown on the Uniformology site can be found here 

THE BRITISH ARMY
THROUGH THE AGES
 Scottish Regiments of the British Army
1895
  By Richard Simkin​
2nd Dragoons
Royal Scots Greys
Trooper Marching Order

Mounted Left to Right
Queens Own Cameron Highlanders
Field Officer
Review Order

Gordon Highlanders
Field Officer
Review Order
2nd Dragoons
Royal Scots Greys
Officer 
Review Order

King's Own
Scottish Borderers
Officer 
Review Order

Seaforth Highlanders
Private & Piper
Marching  & ReviewOrder

The Royal Scots
Private
Marching Order
Cameron Highlanders
Sergeant
Review Order
The Black Watch
Officer
Review Order
Royal Scots Fusiliers
Officer
Review Order
Scots Guards
Private
Guard Order

Argyll & Sutherland Highlanders
Piper ReviewOrder

Gordon Highlanders
Private
Review Order

King's Own
Scottish Borderers
Colour Sergeant 
Review Order
The Black Watch
Drummer
Review Order

Standing Left to Right