1, British blue is reminiscent of melancholy and sadness. An album by Utoda is called Super Blue. I don't know if you've heard of it, but it means extreme melancholy (literally deep blue). If there is no such implied meaning, just use it as your company name.

English blue also has a bad meaning, which is equivalent to pornography or yellow in Chinese. You don't mean that.

So my advice is, don't use anything with blue.