not sure about intensive courses, but hadair.co.uk at Wolverhampton Airport do the NPPL with onsite exams... They run Ikarus C42 fixed and flex wings as well (if you're into that kind of thing). Doing my RT course/exam there tomorrow. PM me if you want more info.
In addition to those mentioned previously, although not in the midlands, Bicester gliding club definitely does NPPL (SLMG) training and I believe Shennington gliding club near Banbury does too.
In fact a number of gliding clubs have started to do NPPL (SLMG) training, so there may be more.
Bidford Gliding also do NPPL initially in SLMG, and then differences training to SEP if required afterwards. Also does lectures and exams. For more information see www.bidfordgliding.co.uk, email or phone Gordon on 07957 587671.