MikeJ
you should read the rules of the air, as they state quite clearly that flights at speeds of less than 140Kn may be conducted with a flight visibility of <1500m
under VFR rules.Check your Pooleys for a quick reference or the ANO Rules of the air. Its also in Trevor Thom, air law. One point on the 1000ft DH rule, a normal approach profile of 3 deg gives appx 300 feet per mile decent. So 1500m or 1800m, means you will only be at 3-400 ft when coming visual. Main point to remember, they will only look at an aftercast if anything goes wrong, so what is stated therein will be the decider!! As for getting an IMCR and not knowing these rules, well ask your school for a refund under the "not fit for purpose" sale of goods act! Because thats what your imc rating is without this knowledge!