I don't think it's fair to say that Katsu is particularly a British fad. When I lived in London, we'd go to the Japan Centre, or a local Japanese takeaway that

I don't think it's fair to say that Katsu is particularly a British fad. When I lived in London, we'd go to the Japan Centre, or a local Japanese takeaway that had much better sauce but less generous meat portions. But these were pretty much the only 2 options within about 10 minutes walk from Piccadilly. Last time I was in Hong Kong, I stayed in a hotel near Yau Ma Tei station. There were probably 5 or 6 Japanese fast-food restaurants mostly focussed on Katsu curry dishes within a few blocks walk down Nathan Road towards Mong Kok. Despite loving Chinese food, I actually had Katsu curry 3 nights in a row, it was so good there!