What’s best to know is that there’s negatives about all 3 of these, and I think all 3 have threads that rip them to pieces on here and threads that love them, pretty much like all preps in the country!
Im not in the area now but experience and knowledge is recent.
From my experience and your description, I would look closely at Rose Hill or The Mead…..my experience with Holmewood is less and it would be unfair to go with rumour. It’s unfair to go entirely with rumours or online banter from strangers for any school. Holmewood has previously had a reputation as a hot house, which I believe has been squashed. It’s the most expensive by a long shot, astronomical by Year 5. Amazing facilities yes. Full sized swimming pool, amazing grounds, theatre and stage, buildings and classrooms on par with the other two largely - some classrooms are newer and swanky, some are a bit more tired which is common across the board tbh and isn’t an issue for me. I know some who love it, I know some who have said it’s overrated for the price, some say it’s a very lovely place to be if you are the right type of family, whatever that means. It’s the largest, 3 classes a year. Year 7 and 8 are very healthy sizes. Mostly used by families who want independent schools all the way through. New head teacher this academic year. Known as the pushiest and the school for the wealthiest. Both could be unfair things to say.
The Mead is physically the smallest, but they have made damn good use of their space. It’s on a main road, doesn’t have much land at all. No pool, no proper field, I think they do some fixtures off property but not totally certain on that. Very grammar focused - a good option if the 11plus and state grammar is your aim. Has had a few bumps in the last few years with multiple head teacher changes. Don’t know the reason. It’s the cheapest, something to consider. No Year 7 and 8.
Rose Hill has taken some bumps too but is picking up and numbers are growing. Year 7 and 8 shrunk majorly and is now a very discounted rate and rebuilding with great results. Prep is a lovely building, huge theatre and stage like Holmewood, pool is only a few years old so a really lovely place to swim. Huge grounds and woods, smaller than Holmewood but as nice in my opinion.
Rose Hill went through the bumps over Covid largely over how they did online learning. Some parents were very very miffed about the teaching not being live. Holmewood went live. I don’t know about The Mead. I know some excellent Sevenoaks prep schools that also did not teach live. Some parents were very unhappy with this (and a considerable bulk were happy the lessons were not live and content with the live support sessions and tutor times but prerecorded lessons) and there was a resulting flurry of families who left. The Head is more established now. I liked her, felt she was honest and really cared and wanted to move the school forward. Lots of schools have a dip when management changes, This was no exception. My experience was a very positive one, particularly pastoral care which was outstanding from my view. Preprep is a little tired physically and I would say a balance on the senior school front, a lot try for grammar and Year 7 and 8 is VERY boy heavy, though now a good size.
I don’t think you can go wrong with any of these 3 schools. They all have pros and cons and your best bet is to ask for a tour individually, not just open day which all 3 will jazz up the place for. From my experience, all 3 have their cheerleaders with undying love and all 3 have parents ready to take them down and ready to put anyone off who says they’re considering one, All 3 will have kids having extra tutoring to increase their chances for their top senior school or 11plus success. All 3 handled lock down differently and to be honest shouldn’t really be an issue now, it was a learning curve for everyone.
Best of luck with your choice. Go with your gut at the end of the day.