Errington Immigration Services (EIS) Welcome to EIS, a new immigration service that delivers advisory and processing services for your international immigration needs. We recognise the difficulty of the UK immigration system and the processes, the strict legal requirements and complexities which can arise. Our objective is simply to help you navigate through to the immigration status you require. At EIS, we have a small team of highly skilled immigration professionals with extensive experience in global practices. Our aim is to provide bespoke and personalised assistance and advice from initial instruction through to your immigration approval.