Cornish WebServices Ltd | 36 followers on LinkedIn. Cornish WebServices rebranded as ExtraDigital -please see our ExtraDigital LinkedIn page ExtraDigital Ltd are an established Internet Marketing and Website Design company. We deliver impressive results with many clients continuously on first page of Google for many years, due to our targeting of top keywords in highly competitive industries. We offer expert Search Engine Optimisation (SEO), Pay Per Click Advertising (PPC) and Internet Marketing Strategy.