There were some seeds being sold by Top Shelf Seeds called Sour Apple which was Original Diesel x Cinderella 99.
I'm not sure if it's related but seems like a good place to start looking.
I hope you are not talking a bout the weed you can sometimes get in amsterdam that really smells and tastes like green apples or strawberrys... i mean.. it really smells and tastes like green apples or the other case strawberrys...like chemical almost?
Sorry to say but it's chemical shit you taste( at least in a'dam and i don't doubt there are some people doing it in UK) I know the buds were left in condoms with taste (in the case green apples) and then sold in some coffeeshops with no ethics at all. I really hope you are not talking about this one...