I saw on a SEN website that the Sheila Coates foundation is offering fundind to support ASD students attending seconadry schools in West Midlands, NE England and Yorkshire. See https://www.sheilacoates.foundation/rapid-response-fund?utm_campaign=3200674_WSS%20E-News%2021%20September%202022&utm_medium=email&utm_source=Nasen&dm_i=2F68,1WLNM,AMGBMW,6NU9L,1 for details. It might be worth checking if your school is aware of this funding stream.