A bit belated, but here are a couple of pics of my .455 Webley 1913.
The wood grips are WWI era British replacement grips. Not the best pictures, but might help.
That pistol is really unique. It uses a locking system I have never seen used anywhere else. The magazine release is about the hardest to use I know of, and the dual notch magazine is really odd. I know why they wanted it, but the idea just sounds weird. I can maybe see a cutoff on a rifle so the magazine can be reserved for an emergency (enemy cavalry charge?) but on a handgun??? Disassembly is odd, but no more difficult than some other guns, and a lot easier than, say, a Mauser C.96.
The use of the V recoil spring is also odd, but at least consistent with other Webley pistols; the British of that era felt that they made the absolutely best flat springs in the world (and they did) and that they were superior to any coil spring (which is less certain).
Jim