Re: The UK is not educating people in Tech...
but when I look they don't seem to have vacancies on their site to match the headline shortages
That means you are approaching the problem incorrectly. Only 5% of jobs are filled via the Positions Vacant ads.* Try reading What Color is my Parachute? (Merkin) and/or Surfing Your Horizons (Australian). Likely there's a British equivalent; I used the latter in ever so many job clubs in the 90s.
* Confirmed this by having every job club participant list all the jobs they'd had and how they got them.