See all that makes it sound as if you are interviewing them.
questions around areas for development shown in their last Ofsted report
Possibly - but schools are unlikely to want a potential teacher drawing attention to areas of weakness (or development.)
how supportive the local authority is in relation to SEN
Which implies they aren’t supportive. In any case, your job as classroom teacher is to include and accommodate as much as is reasonably possible.
opportunities for professional development
Possibly
how the marking policy works in practice
No, no, no. No school will admit the marking policy is impossible to follow in practice.
take-up of extra curricular activities and opportunities for helping or starting your own
Probably the best question
how do they staff 1:1 and small group provision for SEN and how is that working
That may come across very critically and like I say as if you are interviewing them
how do they find current classroom layout arrangements work
Why would you need to know that
involvement with the PTA or equivalent
Possibly but not strictly relevant to good teaching which is fundamentally what the interview should be about.
anything interesting arising out of the governors' meeting minutes
Why would you presume this would be shared?
I do think you have to be careful as while a couple of questions are fine I would honestly be exhausted if someone fired all those at me and be wondering if I appointed them if this person was just going to be stopping me ALL the time to ask how the governors meetings were and how did I think changing the red to green colour scheme worked ...