The annual review must take place within 12 months of the last review, or of the date the EHC plan was first issued. The appeal doesn’t impact this happening. It could be an opportunity for some matters to be resolved that you are appealing – and the annual review can and should include elements of the Plan which aren’t being appealed and/or can’t be appealed, e.g. section E. If the LA issues a new draft amended EHC plan after the annual review, this can be wrapped into the appeal, and you can request to treat the draft amended EHCP as the working document in the current appeal, rather than having to register a new appeal.