Kingston, along with several other 'lower' Unis, have recently watered-down their MPharm Foundation courses, specificall the Chemistry content, and as a result they are no longer accepted by many top Unis. Bath, for instance, will now no longer touch Foundations from Kingston, Portsmouth, Brighton etc.
Your chances of being able to get into KCL or any other sensible Uni for MPharm with a Kingston Foundation are now effectively zero. Retake your A levels - or complete the MPharm at Kingston.