HI Andy,
The scabbard is fairly rare & probably early ww1 & may be marked & dated at the top of the pouch under the flap.
It was made for thr mk.1 issue kukri.
It is official British Gurkha issue.{& Garhwallis, Kuamon, Assam, & Burma units etc. of course.}
The kukri is not any regular military pattern. So it wont truly be identifiable.
Steel bolsters are still made & have been throughout the 20th century.
Brass bolsters are probably post 1910.
But steel is still currant, & a sign that more time was taken making the kukri than brass ones.
That particular shape doesnt date the kukri. But as a pure speculation it could be ww1 or 1920s era.
It may have been taken into ww1 but it was not an issued pattern kukri.
If you ever want to sell the scabbard or trade it, give me a shout.
Spiral
P.S.
I can normaly be found at IKRHS Forum or on Tora Forum.