Yes, I know it wasn't "all" Blair but I think he's largely responsible via his "50%" mantra which set the scene for academic education over vocational/trade education options.
I also think the conversion of all the Polys into Unis was also a very poor move, and, again, it started before Blair too, so I do appreciate it wasn't "all" Blair.
But, saying that, adult education and local colleges offering adult courses did seem to all disappear under Blair's years. We previously had a World leading adult education sector which disappeared when local colleges moved away from adult education (for all including 16+) and converted into 16-18 only colleges, thus them scrapping lots of professional courses such as accounting etc which previously had a mix of youngsters and adults attending. I did teaching the Accounting technician course in the late 90s and early 00s at our local college of FE in it's "business school" which also did A levels in accounting, economics, business studies, and various other professional courses, but the entire department was scrapped early 00s when the college converted itself to 16-18 only!
I think some of the Unis either need to start opening up to offer a broader range of courses, not just degrees, or need to convert back into being Polys to do the same. Not just "trades" and manual courses, but professional courses too, like accountancy. After all, despite what people think, an accountancy or law degree doesn't make you an accountant or lawyer - you still have to do the professional exams afterwards, so a Poly/Uni actually offering the professional course instead of a degree would reduce the "study time".
There's another aspect of the finances too, in that the current "businesses" offering training materials and study support for, say, accountancy or actuaries, charge a small fortune, and I've often wondered why Unis don't do it themselves as a new/additional income stream. Likewise, the professional bodies typically use hotel conference facilities as exam rooms, so why aren't the Unis "renting out" their halls for external exams - again, as additional income sources.
I do feel that Unis have become too blinkered towards their own degree courses and are missing out on lots of opportunities for offering their facilities and teaching resources in different ways.