Section 42 applies to all special educational provision detailed, specified and quantified in F. If it is in F, the LA agrees it is legal required or has been ordered by SENDIST to include it. It doesn’t apply if the LA hasn’t included something in F because they disagree it is required. In that situation parents would need to appeal to secure the provision in F in the first place. They can’t enforce provision if it isn’t detailed, specified and quantified in F.
Once it is in F, the LA’s duty is absolute and enforcement action including JR can be pursued if it isn’t provided for whatever reason. That includes because the LA claims there is a lack of resources, staff or funding.
Using 1:1s as an example, with the right funding, potentially substantially more (higher wages, potentially much higher wages in line with the teaching MPS, attracts more applicants), and effort (LAs often only start taking parents seriously when they see parents know the law and will advocate and enforce DC’s rights including via the courts) an appropriate appointment can and is made. JR works.