Average length of graduate studies in the UK in the life sciences
Usually a master's course is 1 year and PhDs are 3 years. There are exceptions to this though, some mphil's being 2 years and some structured PhDs being 4 years. However, it is possible in the uk to go straight to a phd after undergrad. Therefore the number of years of graduate studies varies between 3 and 6, though the average is around 4 if you ignore the special cases.