The Sourcing and Consultancy Playbooks Key policies and guidance for making sourcing decisions for the delivery of public services, including specific guidance on sourcing consultancy services. From: Request an accessible format. If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email publiccorrespondence@cabinetoffice.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use. Request an accessible format. If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email publiccorrespondence@cabinetoffice.gov.uk.