Hello Gentlemen,
I do have a British officer's regimental Turban of the 33rd Queens Own Light Cavalry, also a British officer's hot weather mess dress cummerbund of the same regiment, and I can quite safely say that the Turban that is pictured (with Kullah - the pointed cap under the Turban), is definately not a British officers turban of that regiment. The way the turban is tied, to me suggests a cast style, and from my knowledge and research thus far (far from complete), it doesn't look like the manner in which a British officer woukld wear his turban.
Gordon