That's interesting, as I was taught side slipping at the same place that DJRAD wasn't. It was shown to me in more than one lesson, infact I remember coming in a bit high on a dual circuit once or twice during lessons, so sideways we went
I also remember one of the comments which was said in jest, "OOOoooooo flash ba5tard"
The thing that I should practice more is getting out of it without coming off the centre line of the runway, as I tend to find that I always let off either more foot than stick and go all over the place.
Something like that anyway.