I believe these are examples of refurbished Short Magazine Lee Enfield No 1 Mk III bayonets. One in particular showing the long life these bayonets had in them. One had been refurbished in 1936, the other in 1956. Note the difference in finish to the steel blades.
The bayonet shown on this post was manufactured in 1918 at Sanderson England. It has a plethora of armoury stamping, and others the meaning of still elude me. I generally base my refurb opinion here on the '36 stamped over the '18, the Orange Arsenal sheath and great condition of the finished steel. Curiously, the timber grip appears to have an age patina, which would appear slightly in contrast to the steel finish. The 'H' mark on the grip retaining hilt is a mystery to me.