Since the buy-out by private equity I think EHB has been struggling to decide is it still the exam-focused pre-prep or is it trying to transition into being a full prep school and there have been a few U-turns along the way.
I don't think the prep school has been very successful. However, it would take years to build out fully, so it's still early days. In the younger years EHB is very good at focussing on 7+/8+ exam curriculum and standardised testing to benchmark. This can be problematic for kids that can't cope with the work, pace or pressure. You have 60 kids (or parents) that all want a spot at Westminster and some kids crack. All the Y3 boys have a guaranteed spot for Y4. That really took a lot of pressure off, but most people leave anyway.
Some of the teachers are brilliant. Others are average. The head probably divides opinion. There was a brilliant games teacher that had been there for years that left recently. I don't think he got on with the head.
Physically, the challenge is the limited space. The head and the PE money has done a good job of expanding the school in ways that it can, but it will never have the footprint of say EHB the Manor.
I liked the school, but I've also seen it change in a direction I don't fully agree with. If you want a very academic, test-prep oriented school it will fit the bill. But you may have a hard time if you find out, or are advised that Westminster isn't going to be for you, and blame it on the school. All the other parents are thinking the same thing. But if you are happy to accept the possibility you may end up just below the WUS/SPJS/KCJS tier then you will probably be very happy. I think admissions at Sussex House (their traditional destination), Wetherby, boarding schools, WCCS (closed off now they are going with 4+ exclusively), Harrodian, etc is almost a sure thing because the boys are very adept at hard work and exams and they will have plenty of classmates they know once they arrive.