So far, the Slough grammars have sent their own offers even if it was different from the offer from the CAF. Pupils may for example have received an offer from Bucks CC for Burnham GS if they had it first on the list, but if they also qualified for Slough, they would have received an offer from one of the Slough grammars.
It seems they've changed to conform. From the consortium procedures for 2008
All offers of places are made by the candidate's local authority on 1 March 2008. A letter will be sent after the 1 March 2008 from your highest named grammar school in the Consortium on your Common Application Form and registration form, confirming the offer of a place that was sent to the candidate's local authority prior to the 1 March 2008.
Slough Grammar's Advice to Parents of Year 6 pupils
Following the test you will be informed in early December 2007 of your childâ€™s test result. If he/she has reached the pass mark (usually 111), he/she may be therefore eligible for a place at Slough Grammar School. This is not an actual offer of a place as places can only officially be offered by Local Authorities on or after 1st March 2008.
The following paragraph is a bit more vague, though:
All firm offers of places at schools will be made by your Local Authority on 1st March 2008. A letter of confirmation of the offer of a place at Slough Grammar School will be sent to you immediately after this date provided that your child has passed the test, that there is a place available, and that you have listed Slough Grammar School on your Common Application Form.