http://www.ucas.com/ is the Universities Centralised Admission System for degree courses at universities and colleges. Here you will find useful information on how to get into higher education.
http://www.russellgroup.ac.uk/ represents leading UK universities which are committed to maintaining the very best research, an outstanding teaching and learning experience and unrivalled links with business and the public sector.
http://oxbridge-admissions.info/ is administered by a group of students who have all gone through the admissions process for either Oxford or Cambridge.
http://www.push.co.uk/ is an independent guide to UK universities, student life, gap years, open days and student finance.
http://findavet.rcvs.org.uk/veterinary-careers/ contains advice on how to become a veterinary surgeon or a veterinary nurse as well as other animal careers
http://www.medschoolsonline.co.uk/ offers a clear Guide to getting into Medical School in the UK. The site is dedicated to medical schools.