CIE French AS/A LevelWatch
Some books written for complete A levels might have material for AS level as the beginning so you can try and search for them. Nelson Thornes books are great so they might help. Good luck or should I say, Bonne Chance!
I don't think there is one sadly I use the edexcel one. A lot of the topics in it are similar to the ones on our syllabus.
I also recommend you get a good grammar book + plus there are a ton of articles and learning resources online to help with your revision.
Just pm me and I can send you all the links!
Elan AS Level French
Elan Grammar Workbook + CD
Mot at Mot Vocabulary
Bescherelle Complete Guide to Conjugating 12,000 Verbs
Also using the resources on this specialist A Level French website which is very useful.