E-Sign provides a secure electronic signature service that allows users to upload, sign, and store documents online. Documents are signed using an advanced digital signature that incorporates a digital ID for security. The service offers document signing for various industries and a simple pay-as-you-go pricing model of £1 plus VAT per document. Features include drag and drop uploading, tracking document status, and downloading signed documents with an audit trail. E-Sign has achieved accreditations and partnerships that establish it as a prominent electronic signature provider in the UK.