No, oleo, it is not the correct technique. You will find that in CAP413.
In general, I find myself in agreement with nohat. However, such practices are outside what we should be teaching PPL students for their RT exams.
If later, and with flying experience behind them and a lot more confidence under their belt, such diversion from ICAO practices can be used. However, as nohat says, "rules are for the blind obedience of fools and the guidance of wise men". They have to learn the "official" way before they play around with various "unofficial" practices. Once they know the reason for the rules, then they will know in what circumstances the rules may be broken, and to what end.