Girls were similar. Looked at published league tables to select those reputable unis that did their course and at around the right offer levels. Then narrowed it down a bit based on campus/non campus, distance etc. Then from a long list narrowed it down further quite easily based on course content. Course content and type is in my view very important and varies considerably from place to place. And this is what can be fleshed out from visits and sample lectures etc. I was surprised how many parents were desperate to see the accommodation on open days when in reality this is unlikely to be the accommodation they are in. I feel whether they enjoy the course and the ‘feel’ of the place is much more important - and that will be different for different dc.
The visits helped narrow down to 5 for the form but it was the ‘offer holders visits’ in the spring of year 13 that made their mind up.
We didn’t visit that many - I think both went to 4 and DD2 only went to a couple of hers on the offer holder days only - as not so many places do her course she wanted a certain type of that course she only ended up with 4 she wanted to put down and visited 2 before applying and 2 after
DD1 had more options but decided after the first couple of visits which teaching style she preferred and narrowed down from there