And yes, lots of information is available about all aspects of every university. From the formal UCAS info, all sorts of UK and world rankings, ratings, student satisfaction surveys, professional sector feedback, student 'journeys' and whole heap of other less formal rankings, blogs, etc.
Every student who applies has to have access to a computer, so lack of internet is no excuse for not doing that research. Libraries, youth clubs, and a whole heap of other organisations offer free support, in the UK. The UCAS system itself is nigh on inexhaustible with the amount of help and information it offers - it walks the student through each step, as in by the nose - and that includes foreign students.
16 - 18 year olds really don't need an adult to help, they just need to be independent readers and self motivated - leaving them to do it themselves makes the whole process almost self selecting!
Apologies if you think that sounds harsh but I spent far too many years dragging lazy student through the process. Every year there were a sizeable cohort for whom actually reading the information, following the advice, making some decisions and then actually applying was just too much.
Oddly, within that sizeable cohort was another distinct group. They were the ones who could arrange a gap year, insurances, passports, discount rates, rail cards, travel itinerary and completing the deferral paperwork always seemed to be a doddle 