The MRCPCH Applied Knowledge in Practice is the most advanced of the three MRCPCH theory papers — and the one with the most distinctive format. The AKP tests your ability to integrate multiple data points, synthesise complex clinical information, and make advanced management decisions. It also uses a question format that no other major UK postgraduate exam shares: N-of-many.
The exam contains approximately 79 questions in two and a half hours, with three diets per year. It is typically sat from ST4 onwards.
The N-of-many format
Approximately two-thirds of AKP questions use the N-of-many format, where you select two or three correct answers from eight to ten options. The question stem tells you exactly how many to select — "Select TWO answers" or "Select THREE answers." Scoring is all-or-nothing: you must identify every correct answer to get the mark. If you select one correct and one incorrect, you score zero. If you miss one correct answer, you score zero.
This changes the cognitive challenge fundamentally. In a standard best-of-five SBA, you can use elimination — ruling out three clearly wrong options leaves you choosing between two, which is a 50/50 proposition. In N-of-many, elimination helps you narrow the field but you must still positively identify multiple correct answers from the remaining options. Partial knowledge that would earn a mark on an SBA (by eliminating wrong answers) may earn nothing on an N-of-many question if you cannot identify all the correct answers.
The technique is different. Read all eight to ten options before selecting any. Identify the options you are most confident about first. Then evaluate the remaining options to determine which additional ones are correct. Do not settle on your first selection and then look for a second — consider all options simultaneously.
Practising this format before exam day is essential. Candidates who first encounter N-of-many questions in the real exam waste cognitive energy adapting to the unfamiliar format rather than applying their clinical knowledge.
Content level
The AKP tests at a higher level than FOP. Where FOP presents a straightforward clinical scenario and asks for the diagnosis or management, AKP presents multi-layered scenarios with investigation panels, growth charts, drug charts, fluid balance charts, and conflicting data points. You must synthesise all of this information to reach the correct answer.
Questions often require integration across multiple paediatric domains — a child with a cardiac condition who develops a renal complication while on immunosuppressive therapy, requiring you to draw on cardiology, nephrology, and pharmacology knowledge simultaneously.
Topic weighting
The topics mirror the RCPCH curriculum but at a higher complexity. Complex respiratory presentations account for approximately 10 per cent, complex cardiology 8 per cent, complex neurology 10 per cent, complex gastroenterology 8 per cent, complex infectious disease 8 per cent, complex endocrinology 8 per cent, complex nephrology 6 per cent, complex neonatology 8 per cent, data interpretation 8 per cent, therapeutics and prescribing 8 per cent, and ethics, safeguarding, emergency, and adolescent medicine collectively account for 12 per cent.
The difficulty split skews harder than FOP and TAS — approximately 45 per cent of questions are rated hard, 45 per cent moderate, and only 10 per cent easy.
Revision strategy
Three to four months, starting from a foundation of solid FOP-level clinical knowledge. The first month should focus on practising standard SBA questions from the AKP bank to establish your baseline and identify weak clinical domains. The second month should introduce N-of-many questions specifically — spend dedicated sessions practising the multi-select format and developing your technique. The third month should combine both formats with increasing complexity, data interpretation practice, and timed mock exams.
iatroX is the only MRCPCH question bank that supports the N-of-many format. The AKP bank contains both standard SBAs and over 750 N-of-many questions with a multi-select interface that replicates the real exam. The adaptive algorithm adjusts across all clinical domains. All included at £29 per month or £99 per year.