Maisy, I agree. You talk sense, but you wont win any arguments.
All children are different, so their choices are different. Universities, and the courses they offer, are different. The important thing is for a DC to take a clear view of their strengths and weaknesses and think about what they want to achieve, at University and beyond.
And not be fooled by the supposed "status" of a university/degree, and certainly not by unconditionals or free gifts.
One reason why German industry is sucessful is that they have a long tradition of the sort of apprenticeships allied with local FE colleges, that you describe. Vocational degrees at some, often more lowly ranked, Universities offer similar by the other way round, ie study with placements.
And the snobbishness around the police has me reeling. Police won't pay of their loans, but barristers will. 'Scuse me but someone is having a larf. Barristers are self employed, many very dependent on contacts/networks and on how much the Government will put into legal aid. Like many self-employed professons, some, often London based, earn an awful lot, others will earn very little. Police pay is not bad at all, it is a varied and secure profession and career prospects for the right person are very good.
Ditto "Why shouldn’t a professional police force be staffed by well educated clever people? ...I would like many recruits to have ABB at A level if possible." Errr. Clearly other posters don't waste their time watching Channel 4/5 reality shows about baliffs, or similar, where effectiveness is based partly on knowledge of the law, but also skills like communication and empathy. (Used to love Dog and Beth.) My dad was in the police (no O levels, but a "good war") and believed it was very valuable to have come from a similar background to many of the people he was arresting. He felt he was lucky that he came from a family with a strong set of values, but equally had sympathy for those that did not. I have no idea what goes on in a criminology degree, but if it means a combination of the old Sergeants exams plus some of the communications skills that are equally emphasised on medical school courses and other public facing training, that sounds like a reasonable choice for someone who wants to join the police. I can see no reason why you should choose somewhere which belongs to a lobby group of research-strong Universities. But first take a step back, consider whether you have the right attributes, perhaps by taking a gap year and working in parallel roles, and then look at the courses and graduate desitinations carefully.