The “V” series of S&W Military & Police .38 revolvers were made during World War Two (1942 – 45). There were two versions. The first, made for Britain, and its associated Commonwealth was called the .38-200 Model. All were chambered in .38 S&W, and most had 5 inch barrels, although 4 and 6 inch lengths are known.
The second version was made for U.S. forces, and was identical to the first, except that they had 2 or 4 inch barrels, and were chambered in .38 Special.
During the middle 1950’s the British declared their .38-200 revolvers to be obsolete, and dumped them on the surplus market. One way or another, most ended up in the United States.
Because the .38 S&W cartridge was not particularly popular in the U. S. many importers had them rechambered to .38 Special, which was not a good idea. The resulting chamber is oversized in diameter for the .38 Special round, and depending on how well the work was done, you may get split cases. It is not advisable to shoot Plus-P ammunition in these guns. Sometimes, but not always, the .38 S&W mark on the barrel was overstamped to read ".38 SPEC."
In addition to rechambering some were refurbished and refinished. A lot had their barrels shortened and new front sights were mounted. The hole for the lanyard loop was plugged, and often the original stocks, which were plain unchecked walnut were replaced with something else.
This work was done in both Britain and the United States by various gunsmithing companies, but in the case of your revolver the “England” stamp on the cylinder would suggest that the work was done there.
You have an interesting artifact, but be careful about what you shoot in it.