Hahaha ... I beg to differ ... why should there even be a difference in the first place?
I do have one (or another?) question, the requriement is British accent, or as in UK, right? Well, there are at least three main types of accents, the Irish, Scots and the England accent, which one do you want? I am guessing England, but I could be wrong.
English is English, and is, well, English ... whether you speak American accent or British accent, or Australian accent, it is still English! The point of ANY language, is to make sure that the audience (whether it be one person or one roomful of 900, as
in Spring 2007 in my case) can hear you and understand you, regardless of accent (and hand writing, hahaha) ... it is naive and ignorant to think that any one accent is better! However, having said that, if the audience is of certain background, it might make
them feel more pleasant to hear their home country accent.
So, maybe this recording is some sort of tourist thing?