A little over 10 years ago, then-Prime Minister David Cameron declared his intention to make apprenticeships “the norm” for school leavers not wanting to go to university. And just four years ago, successor Boris Johnson vowed he was going to offer a guarantee of an apprenticeship to every young person. Since 2010, some 5.3 million people have learned the skills they need while doing the job and getting paid. As exam results are mailed out over the coming weeks, many more youngsters will be considering it as an option. But over recent years the number of apprenticeships has plummeted. The Char…