It always amazes me how much inaccurate information is given out online - if someone is interested in a school, they should visit and check out these questions...
To say that HABS is only academic and has little outside that is stunningly inaccurate - just browse their social media to see examples of what pupils get up to... When I was a governor there we built a second sports hall for the boys school including an indoor climbing wall / cafe / swimming pool with moving floor for water polo / etc. the facilities are superb!
Also, to say that they are not on the same academic league as St Paul's / Westminster / CLS is to have no idea either... Schools will be a result of their ethos / facilities / staff / pupils and parents - it is the combination of all of those which makes the final product - some schools will attract particular children, and these things change over time, so the schools vary as to which one is 'more academic'...
Historically HABS competed with Merchant Taylors and Mill Hill locally (for boys) and NLCS (for girls) - but equals at an academic level were seen as Eton to the West / St Paul's and Westminster in London and not much else. However, St Paul's and Westminster and CLS are all inner-city schools, HABS is a campus school in the countryside - it has a very different feel and will attract different families
As to which is best... well: https://www.independentschoolsoftheyear.co.uk/winners-2025/ looks as though HABS won last year - and in fact appear more than once in the results!
The move to one executive head (Gus Lock) started a number of years ago when he was appointed from Warwick to HABS boys school - he is a seriously impressive chap (I was one of the governors who appointed him) - the move to two schools but with one joined up approach and 'back office' has been a long time in the planning...
Every school will have some problems - how they deal with them is what is important, they are dealing with c. 3,000 children and families and humans bring issues with them - I have never seen evidence of a toxic atmosphere at HABS and I have had involvement since I went there in the 1980s - as for 1 hour of homework a night - 3 x 20mins. homework was what we were given aged 11 back in the 80s - it expanded as you went up the school - and yes, homework is a part of the deal schools are partnerships between families and educators.
So, these are all good schools - but to see which one works for a specific child needs the family to start to engage with the school to find out - there is no simple answer that makes any one school better than all others for all children - as for silly comments about no extra-curricular and toxic atmospheres - does anyone really believe that any independent school has no extra-curricular - they wouldn't be in business and as for toxic atmospheres - if all the pupils are leaving, then perhaps, but if they are not - are the rumours really true, or just one person's biased interpretation?