These double edge safety razors are made by Wilkinson Sword. They've been making these stainless steel blades since 1962.
Wilkinson Sword was founded as a company in London in 1772 by Henry Nock. It was a company that manufactured swords. The company has also produced guns, bayonets typewriters, garden shears, scissors and even motorcycles. In 2000, the company closed its razor plant in England and now production is done in Germany.
Remember- these blades are not permitted in carry bags.