At the end of the talk the Head said something like "One last thing - Thames is a mainstream school, not a special school. We try to be inclusive but there are limits. Please remember we are a mainstream school."
I also found that my access to the Senco was blocked at every turn. When I registered for the open day and asked if the Senco be available to meet I was met with a barrage of questions about my child's diagnosis and what documentation I had. This was not put in a friendly or welcoming way.
I asked the student showing me around if I could meet the Senco (just like I was meeting other teachers). She looked baffled and then said I've had to speak to the Head to do that. Then I asked the Registrar. She was quite snappy with me and said "She's teaching - all day". So I asked if she was a teaching Senco ie not a full-time Senco, and the Registrar said "no she's doing one-to-ones, all day" and then turned her back on me (!). (She also snapped at a student next to me.)
Add this to the change in tone and statements on their website over the past few years and I would say they are attempting to position themselves as more of a standard academic secondary and this of course involves ditching kids who might take up time or resources.