I'm afraid Labour are very likely to take an axe to SEND funding, parental rights for tribunals and LA responsibilities in the next few months, the indicators are all there along with the early releases. It's hell on toast right now anyway with EHCPs taking a year plus and many being badly written, and kids out of school with no support.
Tbh there are much, much bigger root problems that need addressing to make any real difference, such as why mainstream schooling, often despite staff working hard and doing their best, just isn't accessible or possible for so many childrne and why the school environment is overwhelming. More options for schooling need to be available including more therapeutic and neurodivergent friendly options where sensory environments can be better managed, there's less relationships involved with older children having to move from classroom to classroom through a sea of different teachers, and much much more. There are so very many children now with so much need, it's not overdiagnosing, there needs to be serious investigation of why need has escalated so much.
The current approach of just somehow finding more and more and more LA funding to throw at badly met needs and endless beaurocracy and fighting isn't going to improve the situation for anyone, and there is a limit to how much tax payers can fund. There is no political party currently with any real interest or plan to address this properly. But whoever is in power will be focused on trying to cut back on the spend.