Kerry Leigh Harrison Biography Kerry is an experienced content writer, with a First Class Hons Degree in Multimedia Journalism. She works for UK Web Host Review, providing content on SEO, web hosting, web performance, UX and more. Published articles: Are You Committing One Of The 7 Deadly Sins Of SEO? If you go wrong with your SEO campaign, it can be very damaging. Here are the top 7 mistakes that can tank your rankings and ensure massive penalties.