Medicine continues to be highly competitive and therefore grade A is required in 3 A level subjects and relevant work experience and community work is expected. For the standard 5 or 6 year courses, Chemistry A level is a must at all but a few universities, and another science or maths is also needed. Most universities specify the need for Biology as the other science and even for those that do not, it is a highly recommended that you do Biology A level as it makes studying Medicine a lot easier if you have a biological background. We would recommend you consider Maths or Physics as a 3rd A level, but many medical schools do not require this. The minimum grade offer from medical schools is AAA at A level, with several now requiring A*AA.
As medicine is so competitive, your GCSE profile and work experience is very important and you must be strong to stand a chance. All medical schools have entrance tests (BMAT and UKCAT).
Some medical schools offer a 6 year course which includes a foundation year for those that do not have more than one science/maths A level; you will still need A/B from your A level subjects.
The British Medical Association (BMA) website
has a wealth of information on entry requirements for medical schools. Look for the leaflet and video called ‘Becoming a Doctor’.
Entry requirements and commonly asked questions: http://bma.org.uk/developing-your-career/medical-student/how-to-become-a-doctor/applying-to-medical-school/school-leaver
The medicportal is a very useful website for information on studying medicine: https://www.themedicportal.com/?gclid=EAIaIQobChMIz_HI0Mqi1wIVSTwbCh2blAjwEAAYASAAEgKgJfD_BwE
British Dental Association (BDA)