Ok so I should assume the questions are specific to the UK, and not ICAO I general? I that case the answer would have been 1500m.
Originally Posted by
ChickenHouse
Learn the answer to the questions relating to the catalogue of the authorities which will test you. Focus on national flying, as exams do ask only that and postpone to understand the ICAO-SERA-CAA-NAA-xAA madness for later doing cross border flying. Too much to start with.