As far as I can see the SRP has done nothing wrong, but I'm assuming this is a Bucks primary school, in which case the headteacher was part of the process.
If the school did something incorrectly on the review form, and this seriously disadvantaged you, it is arguable that the review process could not have been 'fair, consistent & objective' (FCO).
With regard to academic evidence for an appeal, you will need to take this up again with the school because an appeal panel will react in just the same way as the review panel did.
It needs handling diplomatically, but you do now have the evidence of the SRP's comment to show the head, and one would hope the school would go out of its way to make amends!
Ideally they should write something about "recent rapid progress", and/or recent practice SATs papers showing that your daughter is clearly on target for 111-120.
If the school still won't co-operate, put your concerns to them in writing, and keep a copy as evidence for an appeal.
With regard to FCO, in addition to your main issue, you should also try using one or two of the arguments suggested in section D of the Bucks sticky:
viewtopic.php?f=12&t=57343