At Piccadilly Circus in London, there is a billboard with this logo, right?
Yes, since more than 20 years, TDK has had a neon sign there.
The Piccadilly Circus in London is a prominent landmark, close to many long-established and fashionable shops as well as famous theaters. Its neon signs are often featured in TV broadcasts and on postcards. Among these, the TDK sign has become a familiar sight since the beginning of the 1990s. Prominent TDK billboards are also found in other major cities around the world, such as at Times Square in New York,in Shanghai, etc.