Dear Dr. PenCaster, PLAB is a License exam and MRCP is a Membership exam. PLAB allows International Meducal Graduates to practise in UK. There are 2 phases in PLAB; PLAB 1 and PLAB 2. Once you clear both the phases, you are eligible for GMC registration. This GMC registration allows you to work in the UK. MRCP is a speciality exam. Once ypu clear MRCP 1, MRCP 2 and PACES, then you are eligible for GMC registration allowing you to work in he UK. If you want to become a Consultant, then you need to undergo Specaility training and for that you need MRCP. So lets say you have cleared PLAB exam, at a later point in time, you still need to appear and clear MRCP exam . But thats not the case with MRCP. If you cleared MRCP exam first , you neednt write PLAB exam. So to answer your question, clearing MRCP and then PACES will allow you to work in the UK.