So the short answer seems to be - no, only on a word by word basis. Thanks for the explanation.  I'll give it a go! Whilst I believe it to be an unacceptable pronunciation to be teaching a child, I'm sure others would disagree (say, for example, the parents of the chid in question.)  It doesn't change the fact that it sounds and is generally assumed to be an uneducated way of speaking and substitutes v or f for the phoneme th.  I do not want to spend time suggesting to my child that this is OK when it is clearly wrong outside a very small part of East London.  Offering UK pronunciation could always be a bit tricky - which accent will most people want to hear?

Skylark - obviously we have no problem with dialects or regional accents in general.  Or speech impediments for that matter!  But I completely disagree with their use as a teaching tool for a child who has no way of understanding the difference.  Living in Scotland? Sure, expect a bit of a Scottish accent.

Is anyone else incredibly irritated by the use of incorrect pronunciation in the UK version of LR? Is there any way of deleting just the voice with the speech impediment and keeping the others?