What industry is he looking to enter?
There are some amazing opportunities out there ( ie civil service/ GCHQ, as well as many other great companies)
There is great information on www.ratemyapprenticeship.co.uk/
as well as ucas ( there is an apprenticeship section) and NotGoingToUni
You can see which apprenticeships are possible by looking at the Institute for Apprenticeships ( not vacancies though).
For vacancies, it is best to look at a variety of sites- not just the gov apprenticeship site.
There are so many positives, but I don’t believe it is an easy option. They do have to juggle a job and studies. Although they get time off in the week, they may still have to spend significant time over and above their job to manage it.
Also, although some companies hire loads of apprentices, he may be primarily working with people who are much older. It would be a much different experience. Does he believe he is ready for that? Is he ready to work Mon- Fri, 9-5? Not every one is at 18.
If he is serious about an apprenticeship, it would be a good idea if he gets a part time job- otherwise it may be really hard to secure a place.
There are some ‘big name apprenticeships, and they can be competitive, but actually there are so many great opportunities with smaller companies too. Also, don’t discount level 4 or 5 apprenticeships- many employers start at lower levels, with progression to higher levels possible after.
Finally
Your son could apply to uni as a back up, but also he may want to give himself a year or two after college to secure an apprenticeship. It would give him more experience in the workplace ( assuming he’ll be working) and it will put him in a good position for the mid year vacancies