Sorry.Never set to QNH.This explains the very low radio altitude at times.If you have a look at flight safety site SKYBRARY.AERO you will find a section on go-around safety.Not only was the actual approach poorly flown, but the following G/A has many of the errors mentioned at Skybrary.This is a huge problem area in my opinion as an instructor.The all engines operating G/A is something that must get more practice during simulator training, not just the usual engine out exercise.