OK good pics, although one of the full rifle and a close-up of the butt socket writing would be good I think I can make a proper ID from these.
pic1: interesting but plate, but the checkering is not original. Odd that they checkered the screws but not the door. It lacks a sling mount on the right side of the butt and that eliminates the possibility of this being a Metford carbine butt. And there is no ID disc, which makes me suspicious about being a Carbine.
Pic2: The money picture. While small it can make out some of the stampings on the socket I believe it likely says
mtm
\ I /
=== (yes that is a crown/royal cipher)
VR
ENFIELD
1896
LE
I
This tells us that first off this was not a commercial gun but was produced for the military. Manufactured in Enfield England in the year 1896. It is a Lee Enfield (better known as MLE, or long Lee in this case) mark I (OK I'm guessing about the mark I configuration but based on the above, I see no reason to presume otherwise). Also that the stampings are on the right side of the stock and not the left we know this is not a Carbine model. (For some reason the British like to stamp the carbines on the left side).
also the magazine cutoff has been removed, and although the magazine looks to be a 6 round mag, the profile looks wrong to me. LEC magazines are noticeably more angular in the corners coming straight into the forestock at the front, not extending down below. I'm guessing that it was shortened at the time of conversion to a hunting rifle.
And the bolt handle is not spooned (flattened). see Englishman's pics.
Picture 5 is also a very good one in that it tells us a lot too. The E on the Nock's form means it has Enfield rifling not Metford rifling (Confirming the MLE identification), that is definitely a Long Lee hand-guard and the graduation on the back sight only go up to 16 on the left side (because carbines did not have volley sights they went up to 20).
So my interpretation is that this was originally a 1896 produced MLE that has been sported, apparently by a competent gunsmith and cut to carbine length, possibly at the same time or perhaps later, that is impossible to say.
Keep it as is and enjoy it, it looks like a nice well cared for rifle. I love the cocking piece safety, especially for hunting.