This is the second edition of the book, prepared for the aspirants of part 1 MRCOG exam, UK in accordance with the RCOG core curriculum. Comprising of 17 chapters, the book covers the basic sciences relevant to obstetrics and gynaecology at a level suitable for doctors. Clinical and laboratory aspects of various topics are illustrated in the form of figures, tables, flowcharts, boxes, points-to-remember, single best answers, and mnemonics. SBA are now compiled at the end of each topic along with references to their answers in the text. Two new chapters, such as data Interpretation and image-based questions have been added. New questions from the examinations over the past 2 years (Including the July 2018 Examination) have been incorporated in each of the chapters, making a total of 1, 200 SBAs.