Guppy, this is the
UK AIP. If you are studying for CPL/ATPL exams, this is one of the sources of knowledge. If it's in here, is HAS to be correct. But when studying for UK exams in the UK, it is important not to let real life and facts get in the way of "good" exam question. Fortunately, the better schools in Britain give you real answers as well at the exam answers - the two are often quite different.
PM