Proof read, sense check and add variety to list of pre-written sentences

I have a set of 12 sentences. For each sentence, 200 variations have been written with the same basic meaning but written using different sentence structure and phraseology. I require an experienced writer to check through this content and: * Correct spelling, grammar and punctuation errors * Re-write any sentences which appear badly or awkwardly phrased, too abstract or utilising the wrong lexicon for a UK audience * Increase the level of variety in structure and word / phrase usage between each of the sentences supplied The content is provided in the form of a .xlsx spreadsheet, with each sentence split into tabs, each containing 200 variations. The sentences have been ordered alphabetically to make it easier to identify instances with too little variation. I anticipate that each sentence set will require between 20 - 40, so as rough average approximately 360 sentence revisions will be required (though in many cases, this shouldn't require complete sentence re-writing). Any changes made should be highlighted by entering a revised sentence in the spreadsheet cell to the right and changing that row's text to red. The spreadsheet containing the copy can be provided on request. Any examples of your previous work, and an overview of your experience would be advantageous.