Thanks Etienne, does this mean it's going to count against my case as I have already submitted the results.
No - but probably best not to make a point of highlighting it again. I don't think it does any harm, but I don't see how the panel can give it any weight if the two results are not directly comparable.
Do they normally give the professional details of appeal panel member as in my letter, they have addressed them as ‘lay’ Chairman and ‘lay’ member.
All you are told in the letter is whether they are 'lay' or 'non-lay'. They will say a bit more about themselves at the hearing, but it's up to them how much they tell you.
Is it alright to include the reasons why we want the school for our DD even though we are occ?
No, this is not about the school - it's about whether your daughter should be 'qualified' for a Bucks grammar school.
I am really terrified as I have to go on my own. DH is unwell, will this affect my case?
No, as MG says, panels are used to parents turning up on their own. Much better, by the way, to be terrified than over-confident.
Some good points from 'mama me', but officially the recording of a hearing would not normally be permitted (Code of Practice, para. 2.26), and I would strongly advise against attempting a secret recording.